Cita APA

Willis, B., & Willis, R. (1934). Geologic structures McGraw-Hill.

Citación estilo Chicago

Willis, Bailey., and Robin Willis. Geologic Structures. 3. ed. New York: McGraw-Hill, 1934.

Cita MLA

Willis, Bailey., and Robin Willis. Geologic Structures. 3. ed. New York: McGraw-Hill, 1934.