Christ, Henry
Modern english in action
Lexington, 1982
Buku Teks
Wyld, H.C.
History of modern colloquial English
Oxford Blackwell 1953
Buku Teks
Modern english short
Buku Teks
New, W.H.
Modern stories in English
Copp Clark Pitman, 1986
Buku Teks
Crowell, Thomas Lee
Index to modern English
McGraw-Hill, 1987
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