APA (7th ed.) Citation

Thomsett, M. C. (1988). The little black book of business letters. American Management Association.

Chicago Style (17th ed.) Citation

Thomsett, Michael C. The Little Black Book of Business Letters. New York, NY: American Management Association, 1988.

MLA (9th ed.) Citation

Thomsett, Michael C. The Little Black Book of Business Letters. American Management Association, 1988.