Cita APA (7a ed.)
Nelson, G. E., & Ray, J. D. (1971). Biologic Readings for Today's Students. John Wiley & Sons, Inc..
Cita Chicago Style (17a ed.)
Nelson, Gideon E., y James D. Ray. Biologic Readings for Today's Students. New York: John Wiley & Sons, Inc., 1971.
Cita MLA (9a ed.)
Nelson, Gideon E., y James D. Ray. Biologic Readings for Today's Students. John Wiley & Sons, Inc., 1971.
Precaución: Estas citas no son 100% exactas.