APA (7th ed.) Citation

Griffin, J. (1995). Customer loyalty: How to earn it, how to keep it. Lexington Books.

Chicago Style (17th ed.) Citation

Griffin, Jill. Customer Loyalty: How to Earn It, How to Keep It. New York: Lexington Books, 1995.

MLA (9th ed.) Citation

Griffin, Jill. Customer Loyalty: How to Earn It, How to Keep It. Lexington Books, 1995.