Anggita, F., & Suwartono (2020) Students’ Presentation Anxiety in the Academic Speaking Course. (Bachelor Thesis, University of Muhammadiyah Purwokerto). Repository UMP. https://repository.ump.ac.id/12920. 
Brown, H.D (2001). Teaching by Principle. An Inteteractive Approach to Language Pedagogy New York. Longman.inc
Brown, G., & Yule, G. (1983). Discourse analysis. Cambridge University Press.
Elliot, C. H., & Smith, L.L. (2010) Overcoming anxiety for Dummies. John Wiley& Sons.
Horwitz, EK Horwitz, M.B & Cope, J (1986). Foreign Language Classroom Anxiety. Modern Language Journal,70, 125-132.https://doi.org/10.33086/ehdj.v2i1.379.
Huda Amalia N.L &Ma’mun (2018) Anxiety of EFL Students in Presentation. Journal of English Linguistic, Literature, and Education, 1, 2850-9938. https://www.elitejournal.org/index.php/ELITE/article/view/31
Kondo, D.S & Ying-Ling, Y. (2004). Strategies for coping with language anxiety; The case of students of English in Japan. Elt Journal, 58(3), 258- 265.http://dx.doi.org/10.1093/elt/58.3.258
Liu, M. (2006). Anxiety in EFL Classroom: Cause and Consequence. TESL Reporter, 3(9), 20-21. http://dx.doi.org/10.5281/zenodo.1473161
Lucas, I., R, Miraflores. E, Go, Dianne. (2011) English language learning anxiety among foreign language learners in the Philippines. Philippines ESL Journal, 1, 94-119.
MacIntyre, P. D., & Gardner R.C. (1994).The subtle effects of language anxiety on cognitive processing in the second language. Langauge Learning, 44(2), 283- 305.https://www.scirp.org/(S(351jmbntvnsjt1aadkposzje))/reference/ReferencesPaper s.aspx?ReferenceID=1093364
Ma’mun, N. (2016). The grammatical errors on the paragraph writing.Vision: Journal for Language and Foreign Language Learning,, 5(1), 95-131. http://indexily.com/public/article/read/1643
Mayangta, T. (2013). Students’ Speaking Anxiety in an EFL Classroom. (Research Paper,Universitas Pendidikan Indonesia). Repository UPI. http://repository.upi.edu/3369/
Muhammad, F. (2019). An analysis of students’ speaking anxiety in an English as Foreign Language (EFL) Classroom.( A Case Study at MAN 2 Pandeglang)( doctoral dissertation, UIN Banten).Repository UIN Banten. http://repository.uinbanten.ac.id/4001/
Moleong, L. J. (2004). Metodologi penelitian pendidikan Kualitatif. Bandung : PT. Remaja Rosdakarya.
Noer, M. (2012) Presentasi memukau: bagaimana menciptakan presentasi luar biasa. (Presentasi).https://docplayer.info/108692-presentasi-memukau-bagaimana- menciptakan-presentasi-luar-biasa-muhammad-noer-herry-mardian-ed.html
Nunan, D. (1999). Language teaching methodology. (8th Ed.). Oxford University Press.
Nunan, D. (2003) Practical English language teaching. Mc Graw- Hill Companies Inc.
Richards, J. C., & Renandy, W. A. (2002) Methodology in language teaching: An anthology of current practice. Cambridge university press.
Syahfutra, W. (2021). Students’ speaking anxiety in English education study program. ELT- lectura, 8(1), & 74-83. https://doi.org/10.31849/elt-lectura.v8i1.5920
Sugiyono, D. (2013). Metode penelitian pendidikan pendekatan kuantitatif, kualitatif, dan R&D. Jakarta: Alfabeta.
Sugiyono. (2016). Memahami penelitian kualitatif. Jakarta: Alfabeta.
Suwartono, T. Eka Pertiwi, W., & Nurhayati, N. (2020). How tertiary EFL learners dealt with problems in oral communication in the target language. International Journal of Advanced Science and Technology, 29(4), 2958- 2966.https://repository.unsri.ac.id/35269/1/
Stewart, R., & Rubenstein, H. (2010) A pocket guide to public speaking (3th ed). St Martin.
Stuart, G., Laraia, M. (2005) The Principle and Practise of Psychiatric Nursing. St Louis Missouri
Szyszka, M (2017). Pronunciation learning strategies and language anxiety. Switzerland: Springer.
Tanveer, M. (2007). Investigation of the factors that cause language anxiety for ESL/EFL learners in learning speaking skills and the influence it casts on communication in the target language. Asian EFL Journal, 28. http://dx.doi.org/10.13140/RG.2.1.1995.1129
Tasyi, Eda (2015) A study on Turkish EFL students English speaking anxiety. International Journal of Language Education and Teaching, 1, 583-590. https://ojs.unm.ac.id/joEELE/article/view/35438/0
Toubot, A.M.,Hock Seng, G.,&Binti Atan Abdullah, A. (2018). Examining levels and factors of speaking anxiety among EFL Libyan English under graduate students. International Journal of Applied Linguistics and English Literature, 7(5), 47. https://doi.org/10.7575/aiac.ijalel.v.7n.5p.47
Tseng , S. F. (2012). The factors cause language anxiety for ESL/EFL learners in learning speaking. WHAMPOA-An interdisciplinary Journal, 63(1), 75-90.