Cita APA (7a ed.)

Hawley, C. F. (2000). Effective letters for every occasion. Barron's.

Cita Chicago Style (17a ed.)

Hawley, Casey Fitts. Effective Letters for Every Occasion. Hauppauge, N.Y: Barron's, 2000.

Cita MLA (9a ed.)

Hawley, Casey Fitts. Effective Letters for Every Occasion. Barron's, 2000.