Cita APA (7th ed.)

Gregory, W. K. (1951). Evolution emerging. A survey of changing patterns from primeval life to man. Macmillan.

Cita Chicago (17th ed.)

Gregory, William King. Evolution Emerging. A Survey of Changing Patterns from Primeval Life to Man. Nueva York: Macmillan, 1951.

Cita MLA (9th ed.)

Gregory, William King. Evolution Emerging. A Survey of Changing Patterns from Primeval Life to Man. Macmillan, 1951.