Cita APA

Nelson, G. E., & Ray, J. D. (1971). Biologic Readings for Today's Students. New York: John Wiley & Sons, Inc..

Citación estilo Chicago

Nelson, Gideon E., y James D. Ray. Biologic Readings for Today's Students. New York: John Wiley & Sons, Inc., 1971.

Cita MLA

Nelson, Gideon E., y James D. Ray. Biologic Readings for Today's Students. New York: John Wiley & Sons, Inc., 1971.