APA-ийн эшлэл(7 дахь хэвлэлт)

SHARP, D. W. (1984). Writing business letters with a personal touch. Lifetime Learning Pub.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

SHARP, Deborah W. Writing Business Letters with a Personal Touch. Belmont: Lifetime Learning Pub, 1984.

MLA -ийн эшлэл (9 дэх хэвлэлт)

SHARP, Deborah W. Writing Business Letters with a Personal Touch. Lifetime Learning Pub, 1984.