Marquardt, M. (2020). 12 things to know about the Paleolithic Age. 12-Story Library.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMarquardt, Meg. 12 Things to Know About the Paleolithic Age. Mankato, MN: 12-Story Library, 2020.
एमएलए (8वां संस्करण) प्रशस्ति पत्रMarquardt, Meg. 12 Things to Know About the Paleolithic Age. 12-Story Library, 2020.
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