The Cambridge Guide to blended learning for language teaching
edited by Michael McCarthy
Cambridge University Press, 2016
 Buku Teks SO
Sidauruk, Juniato
Penerapan Form-Focused Instruction pada kelas Speaking dan pengaruhnya bagi pembelajar bahasa asing = The use of Form-Focused Instruction in Speaking class and its effects on foreign language learners / Sidauruk, Juniato
2013
 UI - Tesis Membership
Rivers, Wilga M.
Speaking in many tongues: essays in foreign-language teaching
Cambridge University Press, 1985
 Buku Teks SO
Fries, Charles Carpenter
Teaching and learning english as a foreign language
University of Michigan Press, 1951
 Buku Teks SO
Aspects of modern language teaching in Europe
edited by Wolf Gewehr
Routledge, 1998
 Buku Teks SO