APA (7th ed.) Citation

Rosenthal, I., & Rudman, H. W. (1958). Business letter writing made simple. Made Simple.

Chicago Style (17th ed.) Citation

Rosenthal, Irving, and Harry W. Rudman. Business Letter Writing Made Simple. New York: Made Simple, 1958.

MLA (9th ed.) Citation

Rosenthal, Irving, and Harry W. Rudman. Business Letter Writing Made Simple. Made Simple, 1958.

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