Christie, Francis
Language education / Francis Christie
Oxford University Press, 1989
 Buku Teks SO
Rivers, Wilga M.
Speaking in many tongues: essays in foreign-language teaching
Cambridge University Press, 1985
 Buku Teks
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
Language and language learning
edited by Albert H. Marckwardt
National Council of Teachers of English, 1968
 Buku Teks SO
Approaches to teaching foreign languages
edited by M.G. Hesse
North-Holland, 1975
 Buku Teks SO