Cita APA (7a ed.)

Longwell, C. R., & Flint, R. F. (1958). Introduction to Physical Geology (4th.ed.). John Wiley.

Cita Chicago Style (17a ed.)

Longwell, Chester R., y Richard Foster Flint. Introduction to Physical Geology. 4th.ed. New York: John Wiley, 1958.

Cita MLA (8a ed.)

Longwell, Chester R., y Richard Foster Flint. Introduction to Physical Geology. 4th.ed. John Wiley, 1958.