Act of Republic Indonesia Number 20, 2003. (2017, February 24). Retrieved from sindikker.dikti.go.id/dok/UU/UU20-2003-Sisdiknas.pdf
Afriani, Z.L., Mirizon, S., Sitinjak, M.D. (2020). Cultural content analysis of English textbooks used by tenth graders in Bengkulu Utara. Lingua: Jurnal Bahasa dan Sastra, 20(1), 65- 76.
Astuti, S. (2019). Early Childhood Character Education Practices Based On Local Wisdom In Aceh: Challenges And Efforts Made In Globalization Era (Vol. 1, Issue 2).
Cohen, L., Manion, L., & Morrison, K. (2007). Research methods in education (6th ed.). New York, NY: Routledge.
Cubukcu. (2022). The Effect of Hidden Curriculum on Character Education Process of Primary School Students *. www.edam.com.tr/estp
Cunningworth, A. (1995). Choosing Your Textbook. Oxford: Macmillan Heinemann.
Dewey, J., & Dewey’, J. (1897). My Pedagogic Creed. In The School Journal: Vol. LIV (Issue
3).
Gunawan, R. (2017). The Role of Character Education for Early Children in Early Childhood Education Programs in Happy Kids Bogor Indonesia. Advances in Social Science, Education, Humanities Research, 6(6). Atlantic Press.
Indonesia Ministry of Education and Culture.(2020). Kajian Pengembangan Profil Pelajar Pancasila. Jakarta: Kementerian Pendidikan, Kebudayaan, Riset, dan Teknologi
Lickona, T. (2012). Mendidik untuk membentuk karakter: Bagaimana sekolah dapat mengajarkan sifat hormat dan bertanggung jawab. Jakarta: Bumi Aksara.
Naziev, A. (2017). What is an education? Math as humanity View project Realization of dual categories View project. https://www.researchgate.net/publication/317545698
Mei. (2015). The Hidden Curriculum in Language Classrooms. Sino-US English Teaching, 12(6). https://doi.org/10.17265/1539-8072/2015.06.003
Miles, M., & Huberman, A. M. (1994). Qualitative data analysis (2nd ed.). London: SAGE Publication.
Permana, D. R., Inderawati, R., & Vianty, M. (2018). Portraying Character Education in Juniro High School Textbooks of the 2013 Curriculum. Journal of English Language Studies, 3(2), 245-258. http://dx.doi.org/10.30870/jels.v3i2.3079
Permana, D. R., Inderawati, R., & Vianty, M. (2020). Teachers and Students’ Perception toward Character Education in English Textbooks. Linguists : Journal Of Linguistics and Language Teaching, 6(2), 59. https://doi.org/10.29300/ling.v6i2.3823
Qoyyimah, U. (2015). EFL teachers’ professional dilemmas with moral curriculum reform in Indonesia (Unpublished Doctoral‟s Dissertation). Queensland University of Technology, Queensland, Australia.
Thompson, W. G. (2002). The Effects of Character Education on Student Behavior. https://dc.etsu.edu/etd/706