Gaya APA

Leonard, B, J., Paul, D. (2012). Business and Professional Ethics for Directors, Executives and Accountants (6). Canada: South-Western Cengage Learning.

Gaya MLA

Leonard, Brooks, J.., Paul, Dunn. "Business and Professional Ethics for Directors, Executives and Accountants". 6 Canada: South-Western Cengage Learning, 2012. Text.