Birdsall, J., & Denaker, S. (2006). The Penderwicks: A summer tale of four sisters, two rabbits, and a very interesting boy. Random House/Listening Library.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBirdsall, Jeanne, और Susan Denaker. The Penderwicks: A Summer Tale of Four Sisters, Two Rabbits, and a Very Interesting Boy. New York: Random House/Listening Library, 2006.
एमएलए (8वां संस्करण) प्रशस्ति पत्रBirdsall, Jeanne, और Susan Denaker. The Penderwicks: A Summer Tale of Four Sisters, Two Rabbits, and a Very Interesting Boy. Random House/Listening Library, 2006.
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