Knighton, C. (2020). Leave only footprints: My acadia-to-zion journey through every national park.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKnighton, Conor. Leave Only Footprints: My Acadia-to-zion Journey Through Every National Park. 2020.
एमएलए (8वां संस्करण) प्रशस्ति पत्रKnighton, Conor. Leave Only Footprints: My Acadia-to-zion Journey Through Every National Park. 2020.
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