Gaya APA
BROOKS, L, J., DUNN, P. (2010).
Business & professional ethics (5th ed.).
Australia:
South-western Cengage Learning.
Gaya MLA
BROOKS, Leonard, J.., DUNN, Paul.
"Business & professional ethics".
5th ed.
Australia:
South-western Cengage Learning,
2010.
Buku.