APA-Zitierstil (7. Ausg.)

Ruggiero, V. R. (1998). The art of thinking: A guide to critical and creative thought (5. ed.). Longman.

Chicago-Zitierstil (17. Ausg.)

Ruggiero, Vincent Ryan. The Art of Thinking: A Guide to Critical and Creative Thought. 5. ed. New York [u.a.]: Longman, 1998.

MLA-Zitierstil (9. Ausg.)

Ruggiero, Vincent Ryan. The Art of Thinking: A Guide to Critical and Creative Thought. 5. ed. Longman, 1998.