Optical illusions.

Another dimension : you have to see it to believe it by: Perry, Steve (Language materials, printed)

Mighty optical illusions : more than 200 images to fascinate, confuse, intrigue, and amaze by: Estep, Steven (Language materials, printed)

Optical illusions = Les illusions d'optique : la magie du graphisme; Ilusiones ópticas : la magia del diseño gráfico by: Wang, Shaoqiang (Language materials, printed)

Designing graphic illusions by: Lin, Shijian (Language materials, printed)

Optical illusions : in graphic design by: Wang, Shaoqiang (Language materials, printed)