O'Brien, J. (2000). The farmer in the dell. Boyds Mills Press, Inc..
Cita Chicago Style (17a ed.)O'Brien, John. The Farmer in the Dell. Honesdale, PA: Boyds Mills Press, Inc., 2000.
Cita MLA (8a ed.)O'Brien, John. The Farmer in the Dell. Boyds Mills Press, Inc., 2000.
Precaución: Estas citas no son 100% exactas.