Cita APA

Warren, G., & Warren, G. (1926). Elements of agriculture (rev. edition.). New York, New York: Macmillan.

Citación estilo Chicago

Warren, G.F., y G.F Warren. Elements of Agriculture. rev. edition. New York, New York: Macmillan, 1926.

Cita MLA

Warren, G.F., y G.F Warren. Elements of Agriculture. rev. edition. New York, New York: Macmillan, 1926.