APA (7th ed.) Citation

Kummel, B. (1961). History of the earth: An introduction to historical geology. W. H. Freeman.

Chicago Style (17th ed.) Citation

Kummel, Bernhard. History of the Earth: An Introduction to Historical Geology. San Francisco: W. H. Freeman, 1961.

MLA (8th ed.) Citation

Kummel, Bernhard. History of the Earth: An Introduction to Historical Geology. W. H. Freeman, 1961.