Cita APA

Leet, L. D., & Leet, F. J. (1961). The world geology. McGraw-Hill.

Citación estilo Chicago

Leet, L. Don, and Florence J. Leet. The World Geology. New York: McGraw-Hill, 1961.

Cita MLA

Leet, L. Don, and Florence J. Leet. The World Geology. New York: McGraw-Hill, 1961.