APA (7th ed.) Citation

Hanan, M., Cribbin, J. J., & Donis, J. (1978). Systems selling strategies. AMACOM.

Chicago Style (17th ed.) Citation

Hanan, Mack, James J. Cribbin, and Jack Donis. Systems Selling Strategies. New York: AMACOM, 1978.

MLA (9th ed.) Citation

Hanan, Mack, et al. Systems Selling Strategies. AMACOM, 1978.