APA (7th ed.) Citation

Von Oech, R. (1983). A whack on the side of the head : how to unlock your mind for innovation / Roger von Oech ; foreword by Nolan Bushnell ; illustrated by George Willett: How to unlock your mind for innovation (Warner Books ed.). Warner Books.

Chicago Style (17th ed.) Citation

Von Oech, Roger. A Whack on the Side of the Head : How to Unlock Your Mind for Innovation / Roger Von Oech ; Foreword by Nolan Bushnell ; Illustrated by George Willett: How to Unlock Your Mind for Innovation. Warner Books ed. New York, NY: Warner Books, 1983.

MLA (9th ed.) Citation

Von Oech, Roger. A Whack on the Side of the Head : How to Unlock Your Mind for Innovation / Roger Von Oech ; Foreword by Nolan Bushnell ; Illustrated by George Willett: How to Unlock Your Mind for Innovation. Warner Books ed. Warner Books, 1983.

Warning: These citations may not always be 100% accurate.