1. Abu Mathkour, H. 2004. Arabic with English: Code-switching in Jordanian Arabic. Academia. Retrieved September,13,2018from,https://www.academia.edu/870824/Arabic_with_English_Code-switching_in_Jordanian_Arabi1-
2. Intra-lingual Code Alternation in Arabic: The Conversational Impact of Diglossia
3. Al- Brri, Q.,Bani-Yaseen, M., Al-Zubi, M., and Al-Hersh, M (2015). Diglossia among Students: The Problem and Treatment. Journal of Education and Practice. 6( 32), 14-20. Retrieved Ootober,18/2018from, https://files.eric.ed.gov/fulltext/EJ1083486.pdf
4. Al-Heeti and Al-Abdely's study.(2016).Types and functions of code-Switching in the English language used by Iraqi doctors informal settings. International Journal of Advanced Research and Review.1,(8),10-18.Retrieved September,12/2018,from https://www.researchgate.net/publication/306031490_TYPES_AND_FUNCTIONS_OF_CODE-SWITCHING_IN_THE_ENGLISH_LANGUAGE_USED_BY_IRAQI_DOCTORS_IN_FORMAL_SETTINGS
5. Al-Hourani, A. (2016). The Use of Code-Switching between Arabic and English languages among Bilingual Jordanian Speakers in Malaysia. Ph.D. Thesis. University Sains Islam Malaysia Nilai. Retrieved September,13/2018 from, http://ddms.usim.edu.my/bitstream/123456789/13150/1/PhD%20thesis%20%28Alaa%29.pdf