Haimann, Theo, author
South-Western Pub., 1982
Buku Teks
Leonard , Edwin C., Jr., author
South-Western Cengage Learning, 2013
Buku Teks
Andriole, Stephen J., author
CRC Press, Taylor and Francis Group, 2009
Buku Teks
Allen, Louis A., author
McGraw-Hill , 1973
Buku Teks
Drucker, Peter F. (Peter Ferdinand), 1909-2005, author
LPPM dan Gramedia, 1978
Buku Teks