APA (7th ed.) Citation

Keating, D. L. (2006). Sales: A systems approach (3rd ed.). Aspen Publishers.

Chicago Style (17th ed.) Citation

Keating, Daniel L. Sales: A Systems Approach. 3rd ed. New York: Aspen Publishers, 2006.

MLA (8th ed.) Citation

Keating, Daniel L. Sales: A Systems Approach. 3rd ed. Aspen Publishers, 2006.