Cita APA (7th ed.)

Ruggiero, V. R. (2015). Becoming a critical thinker (Eighth edition.). Cengage Learning.

Cita Chicago (17th ed.)

Ruggiero, Vincent Ryan. Becoming a Critical Thinker. Eighth edition. Stamford, Connecticut: Cengage Learning, 2015.

Cita MLA (9th ed.)

Ruggiero, Vincent Ryan. Becoming a Critical Thinker. Eighth edition. Cengage Learning, 2015.