(2008). A whack on the side of the head: How you can be more creative / by Roger von Oech, illustrated by George Willett.
Chicago Style (17th ed.) CitationA Whack on the Side of the Head: How You Can Be More Creative / by Roger Von Oech, Illustrated by George Willett. 2008.
MLA (9th ed.) CitationA Whack on the Side of the Head: How You Can Be More Creative / by Roger Von Oech, Illustrated by George Willett. 2008.
Warning: These citations may not always be 100% accurate.