Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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