Heying, H. (2021). A hunter-gatherer's guide to the 21st century: Evolution and the challenges of modern life.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHeying, Heather. A Hunter-gatherer's Guide to the 21st Century: Evolution and the Challenges of Modern Life. 2021.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHeying, Heather. A Hunter-gatherer's Guide to the 21st Century: Evolution and the Challenges of Modern Life. 2021.
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