APA استشهاد

Bloom, A. L. (1969). Surface of earth. Prentice-Hall of India.

استشهاد بنمط شيكاغو

Bloom, Arthur L. Surface of Earth. New Jerse: Prentice-Hall of India, 1969.

MLA استشهاد

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