Chick, B. (2011). Riddles and danger. Greenwillow Books.
Cita Chicago Style (17a ed.)Chick, Bryan. Riddles and Danger. New York: Greenwillow Books, 2011.
Cita MLA (8a ed.)Chick, Bryan. Riddles and Danger. Greenwillow Books, 2011.
Precaución: Estas citas no son 100% exactas.