APA (7th ed.) Citation

Redfern, R. (1980). Corridors of time: 1,700,000,000 years of Earth at Grand Canyon. Times Books.

Chicago Style (17th ed.) Citation

Redfern, Ron. Corridors of Time: 1,700,000,000 Years of Earth at Grand Canyon. New York: Times Books, 1980.

MLA (9th ed.) Citation

Redfern, Ron. Corridors of Time: 1,700,000,000 Years of Earth at Grand Canyon. Times Books, 1980.