Spencer, E. W., & Spencer, E. H. (1972). The dynamics of the earth: An introduction to physical geology. New York: Thomas Y. Crowell Company.
Chicago Style CitationSpencer, Edgar Winston, and Elizabeth Humphris Spencer. The Dynamics of the Earth: An Introduction to Physical Geology. New York: Thomas Y. Crowell Company, 1972.
MLA CitationSpencer, Edgar Winston, and Elizabeth Humphris Spencer. The Dynamics of the Earth: An Introduction to Physical Geology. New York: Thomas Y. Crowell Company, 1972.
Warning: These citations may not always be 100% accurate.