Murphy, Herta A.
Effective business communications
McGraw-Hill , 1984
 Buku Teks
Murphy, Herta A.
Effective business communications
McGraw-Hill, 1976
 Buku Teks
Daniel, Carter A.
Reader-friendly reports: a no-nonsense guide to effective writing for MBAs, consultants, and other professionals
McGraw-Hill, 2012
 Buku Teks SO
Unifrorm certivied public accountans exeminations
American Institute of Certified Public Accountants
Amereican Institute of CPA, 1957
 Buku Teks SO
DeTienne, Kristen Bell
Guide to electronic communication : using technology for effective business writing and speaking
Prentice-Hall, 2002
 Buku Teks