APA (7e ed.) Bronvermelding

Bowman, J. (1979). Effective business correspondence. Confield Press.

Chicago (17e ed.) Bronvermelding

Bowman, J. Effective Business Correspondence. Sun Francisco: Confield Press, 1979.

MLA (9e ed.) Bronvermelding

Bowman, J. Effective Business Correspondence. Confield Press, 1979.