Wilson, Kenneth G., author
The columbia guide to standard American English
Columbia University Press, 1993
 Buku Referensi
Evans, Bergen, 1904-, author
A dictionary of contemporary American usage
Random House, 1957
 Buku Referensi
Burt, Angela
The A-Z of correct english / Angela Burt
howtobooks, 2002
 Buku Teks
Nicholson, Margaret, author
A dictionary of American-English usage, based on Fowler's Modern English usage
Oxford University Press, 1957
 Buku Referensi
The holt intermediate dictionary of American English
Holt, Rinehard and Winston, Inc.
Holt, Rinehart and Winston,Inc, 1966
 Buku Teks
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