Cita APA (7a ed.)
Long, L. E. (1974). Geology. McGraw-Hill Book Company.
Cita Chicago Style (17a ed.)
Long, Leon E. Geology. New York: McGraw-Hill Book Company, 1974.
Cita MLA (9a ed.)
Long, Leon E. Geology. McGraw-Hill Book Company, 1974.
Precaución: Estas citas no son 100% exactas.