Wilson, Kenneth G.
The columbia guide to standard American English
Columbia University Press, 1993
 Buku Referensi
Benn, Alec
The 27 most common mistakes in advertising / Alec Benn
American Management Associations, 1978
 Buku Teks
Wilkinson, Frances C.
The complete guide to acquisitions management
Libraries Unlimited, 2003
 Buku Teks
Brostoff, Jonatham
Hayfever the complete guide
Bloomsbury pubishing Limited, 1993
 Buku Teks
Bobola, Daniel T.
The complete idiot's guide to networking
Alpha Books, 1995
 Buku Teks