APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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