APA (7th ed.) Citation

Dee. (1999). Tough customers: How to keep them smiling ... and yourself sane! Synergy Books International.

Chicago Style (17th ed.) Citation

Dee. Tough Customers: How to Keep Them Smiling ... and Yourself Sane! Kuala Lumpur: Synergy Books International, 1999.

MLA (8th ed.) Citation

Dee. Tough Customers: How to Keep Them Smiling ... and Yourself Sane! Synergy Books International, 1999.