APA (7th ed.) Citation

Hancock, G. (2019). America before: The key to Earth's lost civilization (First edition.). St. Martin's Press.

Chicago Style (17th ed.) Citation

Hancock, Graham. America Before: The Key to Earth's Lost Civilization. First edition. New York: St. Martin's Press, 2019.

MLA (8th ed.) Citation

Hancock, Graham. America Before: The Key to Earth's Lost Civilization. First edition. St. Martin's Press, 2019.

Warning: These citations may not always be 100% accurate.