edited by J. Fred Weston
Holt, Rinehart and Winston, 1966
Buku Teks
Hepner, Harry W., author
Prentice-Hall, 1971
Buku Teks
Drucker, Peter F. (Peter Ferdinand), 1909-2005, author
Heinemann, 1973
Buku Teks
Durand, Robert Y., author
Prentice-Hall, 1958
Buku Teks
Ovidiu Nicolescu, Lester lloyd-Reason
World Scientific Publishing Co., 2015
Buku Teks