Harris, David P.
Testing english as a second language
McGraw-Hill, 1969
 Buku Teks
Science readings : for students of English as a second language, with exercises for vocabulary development / edited by Kenneth Croft and Billye Walker Brown
McGraw-Hill, 1966
 Buku Teks
Povey, John F.
Literature for discussion : a reader for advanced students of English as second language / John F. Povey
Holt, Rinehart and Winston, 1984
 Buku Teks
Students' attributions for succcess and failure in the learning of english as a second language: A comparison of undergraduates from six public universities in Malaysia
 Artikel Jurnal
Greenbaum, Sidney
A students grammar of the English language
Longman , 1990
 Buku Teks