Famularo, J.J.
McGraw-Hill, 1961
Buku Teks
Assael, Henry
Kent Publishing Company, 1984
Buku Teks
edited by C. Edward Weber and Gerald Peters
International Textbook Company, 1969
Buku Teks SO
McGraw-Hill, 1970
Buku Teks SO
edited by Albert Newgardsen
American Management Association, 1959
Buku Teks