Cita APA (7th ed.)

Ruggiero, V. R. (2007). The art of thinking: A guide to critical and creative thought (Eigth Edition.). Pearson.

Cita Chicago (17th ed.)

Ruggiero, Vincent Ryan. The Art of Thinking: A Guide to Critical and Creative Thought. Eigth Edition. New York: Pearson, 2007.

Cita MLA (9th ed.)

Ruggiero, Vincent Ryan. The Art of Thinking: A Guide to Critical and Creative Thought. Eigth Edition. Pearson, 2007.