Two Little Hands Productions. (2007). Baby signing time! Two Little Hands Productions.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रTwo Little Hands Productions. Baby Signing Time! [United States]: Two Little Hands Productions, 2007.
एमएलए (8वां संस्करण) प्रशस्ति पत्रTwo Little Hands Productions. Baby Signing Time! Two Little Hands Productions, 2007.
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