Lua APA (7ú heag.)

Chaffee, J. (2017). Thinking critically (12th edition.). Cengage Learning.

Lua i Stíl Chicago (17ú heag.)

Chaffee, John. Thinking Critically. 12th edition. Boston, MA: Cengage Learning, 2017.

Lua MLA (9ú heag.)

Chaffee, John. Thinking Critically. 12th edition. Cengage Learning, 2017.

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