APA (7e ed.) Bronvermelding

De Vries, M. A. (1994). The elements of correspondence. Macmillan.

Chicago (17e ed.) Bronvermelding

De Vries, Mary Ann. The Elements of Correspondence. New York, NY: Macmillan, 1994.

MLA (9e ed.) Bronvermelding

De Vries, Mary Ann. The Elements of Correspondence. Macmillan, 1994.