Perkins, L. R. (2010). As easy as falling off the face of the earth. Greenwillow Books.
Cita Chicago Style (17a ed.)Perkins, Lynne Rae. As Easy as Falling off the Face of the Earth. New York: Greenwillow Books, 2010.
Cita MLA (8a ed.)Perkins, Lynne Rae. As Easy as Falling off the Face of the Earth. Greenwillow Books, 2010.
Precaución: Estas citas no son 100% exactas.