APA (7th ed.) Citation

Dugan, E., & Bethel, W. (1995). Sales letters ready to go. NTC Business Books.

Chicago Style (17th ed.) Citation

Dugan, Eleanor, and William Bethel. Sales Letters Ready to Go. Lincolnwood, Ill: NTC Business Books, 1995.

MLA (9th ed.) Citation

Dugan, Eleanor, and William Bethel. Sales Letters Ready to Go. NTC Business Books, 1995.