Cita APA (7a ed.)
Wileman, R. E. (1980). Exercises in visual thinking. Hastings House Publishers.
Cita Chicago Style (17a ed.)
Wileman, Ralph E. Exercises in Visual Thinking. New York: Hastings House Publishers, 1980.
Cita MLA (9a ed.)
Wileman, Ralph E. Exercises in Visual Thinking. Hastings House Publishers, 1980.
Precaución: Estas citas no son 100% exactas.