APA-Zitierstil (7. Ausg.)

Geffner, A. B. (2000). How to write better business letters (3rd ed.). Barron's.

Chicago-Zitierstil (17. Ausg.)

Geffner, Andrea B. How to Write Better Business Letters. 3rd ed. Hauppauge, N.Y: Barron's, 2000.

MLA-Zitierstil (9. Ausg.)

Geffner, Andrea B. How to Write Better Business Letters. 3rd ed. Barron's, 2000.