Satoshi Miyawaki
On the treatment of English in the education of Filipino language
Graduate School of Language and Culture, Osaka University, 2018
 Artikel Jurnal
English Today: the international review of the english language
Great Britain at the University Press, Cambridge, 1992
 Majalah, Jurnal, Buletin
Sambrook, G.A.
English language
Longmans, Green, 1947
 Buku Teks SO
Sambrook, G.A.
The English Language
Longmans Green & Co, 1947
 Buku Teks SO
Webster's new international dictionary of the English language
William Allan Neilson, editor in chief; Thomas A. Knott, general editor; Paul W. Carhart, managing editor
Springfield, G & C Merriam Co.
 Buku Referensi