APA (7th ed.) Citation

Oech, R. v. (1983). A whack on the side of the head: How you can be more creative (1a. ed.). Business Plus.

Chicago Style (17th ed.) Citation

Oech, Roger von. A Whack on the Side of the Head: How You Can Be More Creative. 1a. ed. Nueva York: Business Plus, 1983.

MLA (9th ed.) Citation

Oech, Roger von. A Whack on the Side of the Head: How You Can Be More Creative. 1a. ed. Business Plus, 1983.