APA (7th ed.) Citation

Wesson, R. L. (2017). Darwin's first theory: Exploring Darwin's quest for a theory of the earth (First Pegasus Books edition.). Pegasus Books.

Chicago Style (17th ed.) Citation

Wesson, R. L. Darwin's First Theory: Exploring Darwin's Quest for a Theory of the Earth. First Pegasus Books edition. New York: Pegasus Books, 2017.

MLA (8th ed.) Citation

Wesson, R. L. Darwin's First Theory: Exploring Darwin's Quest for a Theory of the Earth. First Pegasus Books edition. Pegasus Books, 2017.

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