Cita APA (7a ed.)
Lewis, R. S., & Clark, G. B. (1964). Elements of mining (3rd ed.). John Wiley & Sons.
Cita Chicago Style (17a ed.)
Lewis, Robert S., y George B. Clark. Elements of Mining. 3rd ed. New York: John Wiley & Sons, 1964.
Cita MLA (9a ed.)
Lewis, Robert S., y George B. Clark. Elements of Mining. 3rd ed. John Wiley & Sons, 1964.
Precaución: Estas citas no son 100% exactas.