Potterfield, P. (2012). Classic hikes of North America: 25 breathtaking treks in the United States and Canada. W.W. Norton & Co..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPotterfield, Peter. Classic Hikes of North America: 25 Breathtaking Treks in the United States and Canada. New York: W.W. Norton & Co., 2012.
एमएलए (8वां संस्करण) प्रशस्ति पत्रPotterfield, Peter. Classic Hikes of North America: 25 Breathtaking Treks in the United States and Canada. W.W. Norton & Co., 2012.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.