Pilkey, D. (1999). Captain Underpants and the attack of the talking toilets. Blue Sky Press.
Cita Chicago Style (17a ed.)Pilkey, Dav. Captain Underpants and the Attack of the Talking Toilets. New York: Blue Sky Press, 1999.
Cita MLA (8a ed.)Pilkey, Dav. Captain Underpants and the Attack of the Talking Toilets. Blue Sky Press, 1999.
Precaución: Estas citas no son 100% exactas.