APA (7th ed.) Citation

Naterop, B. J., Haberfellner, E., & Weis, E. (1980). Business letters for all ([5th. imp].). Oxford University Press.

Chicago Style (17th ed.) Citation

Naterop, Bertha Jean, Eva Haberfellner, and Erich Weis. Business Letters for All. [5th. imp]. Kuala Lumpur: Oxford University Press, 1980.

MLA (9th ed.) Citation

Naterop, Bertha Jean, et al. Business Letters for All. [5th. imp]. Oxford University Press, 1980.