Tohutoro APA (7th ed.)

(2008). A whack on the side of the head: How you can be more creative / by Roger von Oech, illustrated by George Willett.

Tohutoru Kātū Chicago (17th ed.)

A Whack on the Side of the Head: How You Can Be More Creative / by Roger Von Oech, Illustrated by George Willett. 2008.

Tohutoro MLA (9th ed.)

A Whack on the Side of the Head: How You Can Be More Creative / by Roger Von Oech, Illustrated by George Willett. 2008.