Παραπομπή APA

Leet, L. D., & Judson, S. (1969). Physical geology (3rd. ed.). Prentice Hall of India.

Παραπομπή Chicago Style

Leet, L. Don, και Sheldon Judson. Physical Geology. 3rd. ed. New Delhi: Prentice Hall of India, 1969.

Παραπομπή MLA

Leet, L. Don, και Sheldon Judson. Physical Geology. 3rd. ed. Prentice Hall of India, 1969.