Gaya APA
Ferrell, L., Ferrell, O. (2009).
Ethical Business (1st Edition).
United States of America:
DK (Dorling Kindersley.
Gaya MLA
Ferrell, Linda., Ferrell, O.C..
"Ethical Business".
1st Edition
United States of America:
DK (Dorling Kindersley,
2009.
Text.