Cita APA (7a ed.)

Wiener, S. (1973). Business Letter Writing. Monarch Press.

Cita Chicago Style (17a ed.)

Wiener, Salomon. Business Letter Writing. New York, Estados Unidos: Monarch Press, 1973.

Cita MLA (9a ed.)

Wiener, Salomon. Business Letter Writing. Monarch Press, 1973.