Kostigen, T. (2014). National Geographic extreme weather survival guide: Understand, prepare, survive, recover. National Geographic.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKostigen, Thomas. National Geographic Extreme Weather Survival Guide: Understand, Prepare, Survive, Recover. Washington, D.C.: National Geographic, 2014.
एमएलए (8वां संस्करण) प्रशस्ति पत्रKostigen, Thomas. National Geographic Extreme Weather Survival Guide: Understand, Prepare, Survive, Recover. National Geographic, 2014.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.