Chang, Valeri, author
Cengage Learning, 2013
Buku Teks
Whittaker, James K., author
Aldine, 1975
Buku Teks
Egan, Gerard, author
Brooks/Cole, 1986
Buku Teks
Thomas, Edwin J., author
Sage, 1984
Buku Teks
Schroeder, David A., author
McGraw-Hill, 1995
Buku Teks