Hughes, Charles W.
American hymns old and new I
Columbia University Press, 1980
 Buku Referensi
Hughes, Charles W.
American hymns old and new II
Columbia University Press, 1980
 Buku Referensi
Tomasowa, Francien Herlen
English for non-english departements
Universitas Brawijaya , 2005
 Buku Teks SO
Eckersley, C.E. [Charles Ewart], 1892-1967
The essential English dictionary English-Spanish Spanish-English
Longman, Green, 1953
 Buku Referensi
McCrum, Robert
The story of english
Faber and Faber , 1992
 Buku Teks SO