The Graphic World of M.C. Escher : Intorduced and explained by the artist.

MLA

Escher, Maurits. The Graphic World of M.c. Escher : Intorduced and Explained by the Artist. London: Pan/Ballatine, 1972.

APA

Escher, M. (1972). The Graphic World of M.C. Escher : Intorduced and explained by the artist. London: Pan/Ballatine.

Chicago

Escher, Maurits The Graphic World of M.C. Escher: Intorduced and Explained by the Artist. London: Pan/Ballatine, 1972.