APA aipamena

GARTSIDE, L. (1989). Model business letters.-- Ed.3. Binarupa Aksara.

Chicago Style aipamena

GARTSIDE, L. Model Business Letters.-- Ed.3. Jakarta: Binarupa Aksara, 1989.

MLA aipamena

GARTSIDE, L. Model Business Letters.-- Ed.3. Binarupa Aksara, 1989.