APA (7th ed.) Citation

Werz, E. W. (1987). Letters that sell. Contemporary Books.

Chicago Style (17th ed.) Citation

Werz, Edward W. Letters That Sell. Chicago: Contemporary Books, 1987.

MLA (9th ed.) Citation

Werz, Edward W. Letters That Sell. Contemporary Books, 1987.

Warning: These citations may not always be 100% accurate.