Cita APA (7a ed.)

Gregory, R. L. (1970). The intelligent eye. McGraw-Hill Book.

Cita Chicago Style (17a ed.)

Gregory, R. L. The Intelligent Eye. New York: McGraw-Hill Book, 1970.

Cita MLA (8a ed.)

Gregory, R. L. The Intelligent Eye. McGraw-Hill Book, 1970.