edited by Kathryn Dean
Sage, 1993
Buku Teks
Weirich, Thomas
South-Western, 1988
Buku Teks
Kinnear, Thomas C., 1943-
McGraw-Hill, 1996
Buku Teks
Kinnear, Thomas C., 1943-
McGraw-Hill, 1983
Buku Teks
Malhotra, Naresh K.
Pearson education, 2010
Buku Teks