APA-ийн эшлэл(7 дахь хэвлэлт)

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

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

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

MLA -ийн эшлэл (9 дэх хэвлэлт)

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