Cita APA (7a ed.)

Write better, speak better. Reader's Digest Association.

Cita Chicago Style (17a ed.)

Write Better, Speak Better. Pleasantville, N.Y.: Reader's Digest Association.

Cita MLA (9a ed.)

Write Better, Speak Better. Reader's Digest Association.

Precaución: Estas citas no son 100% exactas.