Merriam-Webster's guide to business correspondence : a merriam-webster
Merriam-Webster's, Incorporated, 1993
Buku Referensi
Wilson, Kevin
AMA handbook of business writing: the ultimate guide to style, grammar, usage, punctuation, construction, and formatting
American Management Association, 2010
eBooks
De Vries, Mary Ann
The Elements of correspondence
Macmillan, 1994
Buku Teks
Wilson, Kevin, 1958-
AMA handbook of business writing: the ultimate guide to style, grammar, punctuation, usage, construction, and formatting
American Management Association;, 2010
eBooks
Lesikar, Raymond Vincent
Basic business communication : skills for empowering the internet generation
McGraw-Hill/Irwin , 2002
Buku Teks