Levin, Lennart
Comparative studies in foreign-language teaching
Almqvist och Wiksell, 1972
 Buku Teks SO
Teaching modern languages
edited by Ann Swarbrick
Routledge, 1994
 Buku Teks SO
Teaching modern languages
edited by Ann Swarbrick
Routledge, 1994
 Buku Teks SO
Student motivation and the foreign language teacher: a guide for building the modern curriculum
edited by Frank M. Grittner
National Textbook, 1975
 Buku Teks SO
Lee, W. R.
Language teaching games and contests
Oxford University Press, 1991
 Buku Teks SO