APA (7th ed.) Citation

Sher. (1999). How to collect debts (and still keep your customers. AMACOM.

Chicago Style (17th ed.) Citation

Sher. How to Collect Debts (and Still Keep Your Customers. New York: AMACOM, 1999.

MLA (8th ed.) Citation

Sher. How to Collect Debts (and Still Keep Your Customers. AMACOM, 1999.

Warning: These citations may not always be 100% accurate.