Posada, M. (2007). Guess what is growing inside this egg. Millbrook Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPosada, Mia. Guess What Is Growing Inside This Egg. Minneapolis, Minn.: Millbrook Press, 2007.
एमएलए (8वां संस्करण) प्रशस्ति पत्रPosada, Mia. Guess What Is Growing Inside This Egg. Millbrook Press, 2007.
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