Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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