edited by Ashok Kapoor and Phillip D. Grub
Darwin Press, 1972
Buku Teks SO
Kapoor, A.
Darwin Press, 1976
Buku Teks SO
[edited by] S. Prakash Sethi, Jagdish N. Sheth
Goodyear, 1973
Buku Teks
McKern, Robert Bruce
McGraw-Hill, 1976
Buku Teks
Knickerbocker, Frederick T.
Division of Research, Graduate School of Business Administration, Harvard University, 1973
Buku Teks SO