Cita APA (7a ed.)

Oech, R. v. (1998). A whack on the side of the head: How you can be more creative (Magical 3rd ed.). Warner Books.

Cita Chicago Style (17a ed.)

Oech, Roger von. A Whack on the Side of the Head: How You Can Be More Creative. Magical 3rd ed. New York: Warner Books, 1998.

Cita MLA (9a ed.)

Oech, Roger von. A Whack on the Side of the Head: How You Can Be More Creative. Magical 3rd ed. Warner Books, 1998.