Honovich, N. (2017). Ultimate explorer guide: Explore, discover, and create your own adventures with real National Geographic explorers as your guides. National Geographic.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHonovich, Nancy. Ultimate Explorer Guide: Explore, Discover, and Create Your Own Adventures with Real National Geographic Explorers as Your Guides. Washington, D.C.: National Geographic, 2017.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHonovich, Nancy. Ultimate Explorer Guide: Explore, Discover, and Create Your Own Adventures with Real National Geographic Explorers as Your Guides. National Geographic, 2017.
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