Drucker, Peter F. (Peter Ferdinand), 1909-2005, author
Harper & Row, 1996
Buku Teks
Joan Marques, Satinder Dhiman, editors
Springer International Publishing, 2017
eBooks
Hyland, Bruce, author
Gramedia Pustka Utama, 1996
Buku Teks
N.Y. AHI , 19-
Buku Teks
Sam Goldstein, Jack A. Naglieri, editors
Springer, 2014
Buku Teks