Cita APA (7a ed.)
Seckel, A. The Ultimate Book of Optical Illusions. Sterling.
Cita estilo Chicago (17a ed.)
Seckel, Al. The Ultimate Book of Optical Illusions. Nueva York, EUA: Sterling.
Cita MLA (9a ed.)
Seckel, Al. The Ultimate Book of Optical Illusions. Sterling.
Precaución: Estas citas no son 100% exactas.