DePaola, T. (1981). Now one foot, now the other. Putnam.
Cita Chicago Style (17a ed.)DePaola, Tomie. Now One Foot, Now the Other. New York: Putnam, 1981.
Cita MLA (8a ed.)DePaola, Tomie. Now One Foot, Now the Other. Putnam, 1981.
Precaución: Estas citas no son 100% exactas.