Ehrlich, A., & Kellogg, S. (1993). Parents in the pigpen, pigs in the tub. Dial Books for Young Readers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रEhrlich, Amy, और Steven Kellogg. Parents in the Pigpen, Pigs in the Tub. New York: Dial Books for Young Readers, 1993.
एमएलए (8वां संस्करण) प्रशस्ति पत्रEhrlich, Amy, और Steven Kellogg. Parents in the Pigpen, Pigs in the Tub. Dial Books for Young Readers, 1993.
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