APA Citation

Kummel, B. (1961). History of the earth: An introduction to historical geology. San Francisco ; London: W. H. Freeman and Co..

Trích dẫn kiểu Chicago

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

MLA Citation

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

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