Reed, Mortimer P.
Prentice-Hall, 1983
Buku Teks
Malone, Michael S., author
McGraw-Hill, 2010
Buku Teks
Klingenberg, Joseph J.
Reinhold Publishing & Co., 1965
Buku Teks
edited by William Wels
Lippincott Williams & Wilkins, 2003
Buku Teks
Berges, Steve, author
American Management Association, 2006
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