Cita APA (7a ed.)

Turner, H. G. (1978). Triad optical illusions and how to design them. Dover Publications.

Cita Chicago Style (17a ed.)

Turner, Harry G. Triad Optical Illusions and How to Design Them. New York: Dover Publications, 1978.

Cita MLA (9a ed.)

Turner, Harry G. Triad Optical Illusions and How to Design Them. Dover Publications, 1978.