Cita APA (7th ed.)

Stokes, W. L. (1966). Essentials of Earth History: Introduction to historical geology (2nd ed.). Prentice-Hall.

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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