APA (7e ed.) Bronvermelding

Witt, S. (1983). How to be twice as smart: Boosting your brain power and unleashing the miracles of your mind. Rewards Books.

Chicago (17e ed.) Bronvermelding

Witt, Scott. How to Be Twice as Smart: Boosting Your Brain Power and Unleashing the Miracles of Your Mind. West Nyack, N.Y: Rewards Books, 1983.

MLA (8e ed.) Bronvermelding

Witt, Scott. How to Be Twice as Smart: Boosting Your Brain Power and Unleashing the Miracles of Your Mind. Rewards Books, 1983.