Burns, B., & Burns, M. (2025). Wilderness navigation: Finding your way using map, compass, altimeter & GPS (Fourth edition.). Mountaineers Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBurns, Bob, और Mike Burns. Wilderness Navigation: Finding Your Way Using Map, Compass, Altimeter & GPS. Fourth edition. Seattle, WA: Mountaineers Books, 2025.
एमएलए (8वां संस्करण) प्रशस्ति पत्रBurns, Bob, और Mike Burns. Wilderness Navigation: Finding Your Way Using Map, Compass, Altimeter & GPS. Fourth edition. Mountaineers Books, 2025.
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