Eiteman, David K., author
Pearson, 2001
Buku Teks
Sethi, S. Prakash, author
Goodyear, 1973
Buku Teks
Kline, John M., author
Quorum Books, 1985
Buku Teks
Eiteman, David K., author
Pearson, 2019
Buku Teks
[edited by] S. Prakash Sethi, Jagdish N. Sheth
Goodyear, 1973
Buku Teks