APA (7th ed.) Zitazioa

Bloom, A. L. (1969). The surface of the earth. Prentice-Hall.

Chicago Style (17th ed.) Zitazioa

Bloom, Arthur L. The Surface of the Earth. Englewood Cliffs: Prentice-Hall, 1969.

MLA (9th ed.) Zitazioa

Bloom, Arthur L. The Surface of the Earth. Prentice-Hall, 1969.