Mattison, C. (1989). Frogs and toads of the world. New York: Facts on File Publications.
Citación estilo ChicagoMattison, Chris. Frogs and Toads of the World. New York: Facts on File Publications, 1989.
Cita MLAMattison, Chris. Frogs and Toads of the World. New York: Facts on File Publications, 1989.
Precaución: Estas citas no son 100% exactas.