Cita APA (7th ed.)

(1981). Use and misuse of earth's surface. William Kaufmann.

Cita Chicago (17th ed.)

Use and Misuse of Earth's Surface. Los Altos, Calif.: William Kaufmann, 1981.

Cita MLA (9th ed.)

Use and Misuse of Earth's Surface. William Kaufmann, 1981.

Atenció: Aquestes cites poden no estar 100% correctes.