APA (7e ed.) Bronvermelding

Lengefeld, U. A. (1987). Study skills strategies: Your guide to critical thinking. Crisp Publications.

Chicago (17e ed.) Bronvermelding

Lengefeld, Uelaine A. Study Skills Strategies: Your Guide to Critical Thinking. Los Altos, Calif.: Crisp Publications, 1987.

MLA (8e ed.) Bronvermelding

Lengefeld, Uelaine A. Study Skills Strategies: Your Guide to Critical Thinking. Crisp Publications, 1987.