Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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