Seyfert, C. K., & Sirkin, L. A. (1979). Earth history and plate tectonics: An introduction to historical geology (2. ed.). Harper & Row.
Chicago Style (17th ed.) CitationSeyfert, Carl K., and Leslie A. Sirkin. Earth History and Plate Tectonics: An Introduction to Historical Geology. 2. ed. New York u.a: Harper & Row, 1979.
MLA (9th ed.) CitationSeyfert, Carl K., and Leslie A. Sirkin. Earth History and Plate Tectonics: An Introduction to Historical Geology. 2. ed. Harper & Row, 1979.
Warning: These citations may not always be 100% accurate.