Stokes, W. L. (1966). Essentials of earth history: An introduction to historical geology (2d ed.). Englewood Cliffs, N.J.: Prentice-Hall.
Trích dẫn kiểu ChicagoStokes, William Lee. Essentials of Earth History: An Introduction to Historical Geology. 2d ed. Englewood Cliffs, N.J.: Prentice-Hall, 1966.
Deismireacht MLAStokes, William Lee. Essentials of Earth History: An Introduction to Historical Geology. 2d ed. Englewood Cliffs, N.J.: Prentice-Hall, 1966.
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