Marvin, Philip Roger
New York, N.Y. AMACOM c.1980,
Buku Teks
Cohen, Allan R.
Addison-Wesley Pub. Co., 1978
Buku Teks SO
Martin, Shan
Sage Publications, 1983
Buku Teks SO
American Management Association , 1986
Buku Teks SO
Miller, Dennis P.
CRC Press, 2009
Buku Teks SO