Helling, Pam
The grammar and proofreading course
[American Management Association, ], 1992
 eBooks
Camp, Sue C.
Developing proofreading and editing skills
McGraw-Hill, 2001
 Multimedia
Camp, Sue C.
Developing proofreading and editing skills
Glencoe/McGraw-Hill, 2001
 Buku Teks SO
Vallins, G.H.
Good english : how to write it
Andrew Deutsch, 1952
 Buku Teks SO
Sides, Charles H., 1952-
How to write and present technical information
Cambridge University Press, 1992
 Buku Teks SO