APA (7th ed.) Citation

Ellenbogen, A. (1978). Letter perfect: A business person's guide to more effective correspondence. Collier Book.

Chicago Style (17th ed.) Citation

Ellenbogen, Abraham. Letter Perfect: A Business Person's Guide to More Effective Correspondence. New York: Collier Book, 1978.

MLA (9th ed.) Citation

Ellenbogen, Abraham. Letter Perfect: A Business Person's Guide to More Effective Correspondence. Collier Book, 1978.