APA (7th ed.) Citation

Brennan, C. D. (1994). Sales questions that close the sale: How to uncover your customers' real needs. Amacom.

Chicago Style (17th ed.) Citation

Brennan, Charles D. Sales Questions That Close the Sale: How to Uncover Your Customers' Real Needs. New York: Amacom, 1994.

MLA (9th ed.) Citation

Brennan, Charles D. Sales Questions That Close the Sale: How to Uncover Your Customers' Real Needs. Amacom, 1994.