Koontz, Harold, author
McGraw-Hill, 1984
Buku Teks
Drucker, Peter F. (Peter Ferdinand), 1909-2005, author
Harper & Brothers, 1954
Buku Teks
Terry, George Robert, author
Learning Systems, 1981
Buku Teks
Allen, Louis A., author
McGraw-Hill, 1958
Buku Teks
edited Max D. Richards and William A. Nielander
South-Western Publishing, 1958
Buku Teks