Cita APA (7a ed.)

Stokes, W. L. (1960). Essentials of earth history: An introduction to historical geology. Prentice-Hall.

Cita Chicago Style (17a ed.)

Stokes, William Lee. Essentials of Earth History: An Introduction to Historical Geology. Englewood Cliffs, N.J.: Prentice-Hall, 1960.

Cita MLA (8a ed.)

Stokes, William Lee. Essentials of Earth History: An Introduction to Historical Geology. Prentice-Hall, 1960.