Marsico, K. (2013). American bullfrogs. Children's Press.
Cita Chicago Style (17a ed.)Marsico, Katie. American Bullfrogs. New York: Children's Press, 2013.
Cita MLA (8a ed.)Marsico, Katie. American Bullfrogs. Children's Press, 2013.
Precaución: Estas citas no son 100% exactas.