APA (7th ed.) Citation

Keating, D. L. (2003). Sales: A systems approach (2nd ed.). Aspen Publishers.

Chicago Style (17th ed.) Citation

Keating, Daniel L. Sales: A Systems Approach. 2nd ed. New York: Aspen Publishers, 2003.

MLA (9th ed.) Citation

Keating, Daniel L. Sales: A Systems Approach. 2nd ed. Aspen Publishers, 2003.