1. Archer, A., & Hughes, C. (2011). Explicit instruction: Effective and efficient teaching. New York, NY: Guilford Press.
2. Arnbjörnsdóttir, B. (2009) Enska í háskólanámi [Using English in university studies]. Milli mála 1 [Between Languages]. Ársrit Stofnunar Vigdísar Finnbogadóttur [Annual Review of The Vigdís Finnbogadóttir Institute]. Reykjavík, Iceland. Retrieved from https://ojs.hi.is/millimala/article/view/1423/587
3. Arnbjörnsdóttir, B., & Ingvarsdóttir, H. (2010). Coping with English at university: Students’ beliefs. Ráðstefnurit Netlu – Menntakvika 10 [Netla, a webjournal on pedagogy and education]. Retrieved from http://netla.hi.is/menntakvika2010/008.pdf
4. Arnbjörnsdóttir, B., & Ingvarsdóttir, H. (2018a). Language development across the life span: The impact of English on education and work in Iceland. Berlin, Germany: Springer.
5. Arnbjörnsdóttir, B., & Ingvarsdóttir, H. (2018b). Simultaneous parallel code use. In B. Arnbjörnsdóttir & H. Ingvarsdóttir (Eds.), Language development across the life span: The impact of English on education and work in Iceland (pp. 163–178). Amsterdam, The Netherlands: Springer.