Shinn, George
Introduction to professional selling
McGraw-Hill, 1982
 Buku Teks
Loeffler, Agnes G.
Introduction to human disease : pathophysiology for the health professional
Jones & Bartlett Learning, 2015
 Buku Teks SO
Vaczek, Louis
The enjoyment of chemistry : An informal introduction to the nature or matter and its chemical behaviour
The Viking Press, 1964
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Copi, Irving M.
Informal logic
Prentice-Hall, 1995
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Choate, Mark S.
Professional wikis
Wiley Publishing, Inc., 2008
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