APA (7th ed.) Citation

Escher, M. C., & Locher, J. L. (1971). The world of M.C. Escher. H.N. Abrams.

Chicago Style (17th ed.) Citation

Escher, M. C., and J. L. Locher. The World of M.C. Escher. New York: H.N. Abrams, 1971.

MLA (9th ed.) Citation

Escher, M. C., and J. L. Locher. The World of M.C. Escher. H.N. Abrams, 1971.