Weihenmayer, E., & Levy, B. (2017). No barriers: A blind man's journey to kayak the Grand Canyon (First edition.). Thomas Dunne Books, St. Martin's Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWeihenmayer, Erik, और Buddy Levy. No Barriers: A Blind Man's Journey to Kayak the Grand Canyon. First edition. New York: Thomas Dunne Books, St. Martin's Press, 2017.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWeihenmayer, Erik, और Buddy Levy. No Barriers: A Blind Man's Journey to Kayak the Grand Canyon. First edition. Thomas Dunne Books, St. Martin's Press, 2017.
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