Hughes, Charles W.
American hymns old and new II
Columbia University Press, 1980
 Buku Referensi
Hughes, Charles W.
American hymns old and new I
Columbia University Press, 1980
 Buku Referensi
Tomasowa, Francien Herlen
English for non-english departements
Universitas Brawijaya , 2005
 Buku Teks
Eckersley, C. E. (Charles Ewart), 1892-1967
The essential English dictionary English-Spanish Spanish-English
Longmans, Green and Co., 1953
 Buku Referensi
Srinivasan, S.
English Essays
1987
 Buku Teks