Hughes, S., & Barron, A. (2017). Up!: How families around the world carry their little ones. Owlkids Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHughes, Susan, और Ashley Barron. Up!: How Families Around the World Carry Their Little Ones. Toronto, ON ; Berkley, CA: Owlkids Books, 2017.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHughes, Susan, और Ashley Barron. Up!: How Families Around the World Carry Their Little Ones. Owlkids Books, 2017.
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