Cita APA (7th ed.)

Ramsey, W. L. (1969). Modern earth science. Rinehart and Winston.

Cita Chicago (17th ed.)

Ramsey, William L. Modern Earth Science. New York: Rinehart and Winston, 1969.

Cita MLA (9th ed.)

Ramsey, William L. Modern Earth Science. Rinehart and Winston, 1969.