Loughary, John W., author
McGraw-Hill, 1979
Buku Teks
Thomas, Edwin J., author
Sage, 1984
Buku Teks
Egan, Gerard, author
Brooks/Cole, 1986
Buku Teks
Chang, Valeri, author
Cengage Learning, 2013
Buku Teks
Brammer, Lawrence M., author
Prentice-Hall, 1988
Buku Teks