APA (7e ed.) Bronvermelding

KING, F., & CREE, D. A. (1986). English business letters: Commercial correspondence forforeign students.--Ed. New. Longman.

Chicago (17e ed.) Bronvermelding

KING, F.W, en D. Ann CREE. English Business Letters: Commercial Correspondence Forforeign Students.--Ed. New. England: Longman, 1986.

MLA (9e ed.) Bronvermelding

KING, F.W, en D. Ann CREE. English Business Letters: Commercial Correspondence Forforeign Students.--Ed. New. Longman, 1986.