The Hwee Hwee, author
Butterworth, 2000
Buku Teks
Kuratko, Donald F., author
Thomson, South-Western, 2004
Buku Teks
Kuratko, Donald F., author
South-Western Cengage Learning, 2014
Buku Teks
Corey, Marianne Schneider, author
Thomson/Brooks/Cole, 2006
Buku Teks
Helen L. Van Hoozer [and others]
Appleton Century Crofts, 1987
Buku Teks