Alejandro, Brice and Anderson Raquel.(2011). Code mixing in a young billingual
child.Academic Journal Article Communication Disorders Quarterly (1): 23-25. 
Brezjanovie-Shogren, Jelena.(2002). Analysis code switching and code mixing among bilingual
children: two case studies of serbian-english language interaction. B.B.A. Wichita State University. 
Cakrawati, DiasAstuti. (2011). Analysis of code switching and code mixing in the teenlit canting
catia by dyannuraniwdya.UniversityDiponogoro. 
Claros, Monica Stella Cardenas and Ismiyartaty. (2009). Code switching and code mixing in internet cheting:between,’yes.’ya’and’si’,a case study. Jakcalljournal  vol.5 p.3. Coulmas, Florian.(1998). The Handbook of Sociolinguistics.
Davies, Alan. (2007). An introduction to applied linguistics. Edinburgh: Edinburgh University Press
Dowenes,William. (2003). Linguistic and sociolinguistic. London: Cambridge University Press.
Esen, Seckin. (2014).Code switching – definition, types and examples of code switching. 
Retrived May, 14 th  2016 from
http://www.collinsdictionary.com/dictionary/english/announcers. 
Fikry, Rizal. (2010). Code switching and code mixing. retrived June 22, 2016, from Htt://Rizalfikry.com. 
Esen, Seckin. (2014).Code switching – definition, types and examples of code switching.
Retrived May, 14 th  2016 from
http://www.collinsdictionary.com/dictionary/english/announcers. 
Heredia, Rroberto R. and Jeffrey.M btuwn. 2010Code switching texasa & m International university. Texas: M Intenational University.
M.O, Ayeomoni. (2006). Code switching and code mixing style of language use childhood in 
yurba speech community. Nordle Journal Of African Studies Is (1): 90-99.
Mackey, Alison and Susan M. Gass. (2005). Second language  research ,methonology and design.London :Mahwa New Jersey.
Malmkjaer, Kristen. (2005). The linguistics encyclopedia second edition. London: Taylor &Prancis E-Library.
Mtimde, Lumko. Et al. (1998).What is communiti radio afrika: amarchafrica and panossouthermafrika. Retrieved June 14, 2016 from
fromhttp://www.collinsdictionary.com/dictionary/english/announcer. 
Oha. PhD, Anthony C. (2010). Introduction of sociolinguistics.Thesis Universty of Negeria. 
Raphael, Berthele. The influence of code – mixing and speaker information on perception and assessment of forigen language Prophecy: an experimental study. Academic Journal article international journal of bilingualism (3): 12-13. 
Sugiyono. (2012). MetodepenelitiankuantitatifkualitatifdanR&d. Bandung: Alfabeta Sumarsih.Et al. (2014).Code Switching And Code Mixing In Indonesia: Study In Sisiolinguisticts.
London: Canadian Center of Science and Education. 
Wardani, NofiSetia. (2007). Code switching and the factor for changing code used by the
announcers of suaraSemarang radio. Semarang UniversitasDiponogoro. 
Way, Lam. 2013. Code sitching and code mixing in the broadcatsts of commercial radio hongkong, (CRHK). Thesis TheUniversitas of Hongkong.