Osborne, M. P. (2008). Eve of the emperor penguin. Listening Library ; Distributed by Audio Adventures and Landmark Audiobooks.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रOsborne, Mary Pope. Eve of the Emperor Penguin. New York : Prince Frederick, MD: Listening Library ; Distributed by Audio Adventures and Landmark Audiobooks, 2008.
एमएलए (8वां संस्करण) प्रशस्ति पत्रOsborne, Mary Pope. Eve of the Emperor Penguin. Listening Library ; Distributed by Audio Adventures and Landmark Audiobooks, 2008.
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