Collins electronic english dictionary & thesaurus : user's guide
HarperCollins, 1995
 Buku Referensi
The writrs digest guide to good writing
edited by Thomas Clark ... [and others]
Writers digest Books, 1994
 Buku Referensi
The writer's digest guide to good writing
Writer's Digest Bokks, 1994
 Buku Teks
Sage, Lorna
The Cambridge guide to women's writing in English
Cambridge Univesity Press, 1999
 Buku Referensi
Partridge, Eric, 1894-1979
Usage and abusage : a guide to good English
Hamish Hamilton, 1994
 Buku Referensi