Ur, Penny
A course in language teaching : practice and theory
Cambridge University Press, 1999
 Buku Teks SO
IndoMARC dan notasi bahasa-bahasa di Indonesia
 Artikel Jurnal
Readings in a second language : hypotheses, organization, and practice
editor, Ronald Mackay, Bruce Barkman, R.R. Jordan
Newbury House Publishers, Inc., 1979
 Buku Teks SO
Potter, Simeon
Our language
Penguin Books, 1979
 Buku Teks SO
Gerber, Philip L.
Lessons in language
Wadsworth , 1968
 Buku Teks SO