Zimmerman, G. (2023). A fine line: Searching for balance among mountains. Mountaineers Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रZimmerman, Graham. A Fine Line: Searching for Balance Among Mountains. Seattle, WA: Mountaineers Books, 2023.
एमएलए (8वां संस्करण) प्रशस्ति पत्रZimmerman, Graham. A Fine Line: Searching for Balance Among Mountains. Mountaineers Books, 2023.
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