Edited by James L. Gibson, John M. Ivanceich, James H. Donnelly
Business Publications, 1985
Buku Teks
edited by I. Arjang Assad, Edward A. Wasil, Gary L. Lilien
Prentice-Hall, 1992
Buku Referensi
Porter, Lyman W.
McGraw-Hill Kogakusha, 1975
Buku Teks
Steers, Richard M., author
Kent Publishing, 1985
Buku Teks
Lawrence, Paul R.
Addison-Wesley, 1969
Buku Teks