APA (7th ed.) Citation

Silverberg, R. (1966). Forgotten by time: A book of living fossils. Thomas Y. Crowell.

Chicago Style (17th ed.) Citation

Silverberg, Robert. Forgotten by Time: A Book of Living Fossils. New York: Thomas Y. Crowell, 1966.

MLA (9th ed.) Citation

Silverberg, Robert. Forgotten by Time: A Book of Living Fossils. Thomas Y. Crowell, 1966.