APA استشهاد

Lamb Jr., C. . W., & Armstrong, G. (1992). Principles of marketing. South Western.

استشهاد بنمط شيكاغو

Lamb Jr., Charles W., و Gary Armstrong. Principles of Marketing. Ohio: South Western, 1992.

MLA استشهاد

Lamb Jr., Charles W., و Gary Armstrong. Principles of Marketing. South Western, 1992.