APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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

Let op: Deze citaties zijn niet altijd 100% accuraat.