Cita APA (7th ed.)

Chaffee, J. (2009). Thinking critically (9th ed.). Heinle Cengage Learning.

Cita Chicago (17th ed.)

Chaffee, John. Thinking Critically. 9th ed. Boston: Heinle Cengage Learning, 2009.

Cita MLA (9th ed.)

Chaffee, John. Thinking Critically. 9th ed. Heinle Cengage Learning, 2009.