Παραπομπή APA

Clark, T. H., & Stearn, C. W. (1943). The Geological Evolution of North America: A Regional Approach to Historical Geology. New York: The Ronald Press.

Παραπομπή Chicago Style

Clark, Thomas H., και Colin W. Stearn. The Geological Evolution of North America: A Regional Approach to Historical Geology. New York: The Ronald Press, 1943.

Παραπομπή MLA

Clark, Thomas H., και Colin W. Stearn. The Geological Evolution of North America: A Regional Approach to Historical Geology. New York: The Ronald Press, 1943.

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