Hickey, J. J. (1975). A guide to bird watching. Dover.
Cita Chicago Style (17a ed.)Hickey, Joseph J. A Guide to Bird Watching. New York: Dover, 1975.
Cita MLA (8a ed.)Hickey, Joseph J. A Guide to Bird Watching. Dover, 1975.
Precaución: Estas citas no son 100% exactas.