McPhail, D. (1993). Pigs aplenty, pigs galore! Dutton Children's Books.
Cita Chicago Style (17a ed.)McPhail, David. Pigs Aplenty, Pigs Galore! New York: Dutton Children's Books, 1993.
Cita MLA (8a ed.)McPhail, David. Pigs Aplenty, Pigs Galore! Dutton Children's Books, 1993.
Precaución: Estas citas no son 100% exactas.