APA (7th ed.) Citation

Stokes, W. L. (1966). Essentials of earth history. An introduction to historical geology (2a. ed.). Prentice-Hall.

Chicago Style (17th ed.) Citation

Stokes, William Lee. Essentials of Earth History. An Introduction to Historical Geology. 2a. ed. Englewood Cliffs: Prentice-Hall, 1966.

MLA (9th ed.) Citation

Stokes, William Lee. Essentials of Earth History. An Introduction to Historical Geology. 2a. ed. Prentice-Hall, 1966.