Barrios, D. S. (2003). Runner's world complete guide to trail running. Rodale ; Distributed to the book trade by St. Martin's Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBarrios, Dagny Scott. Runner's World Complete Guide to Trail Running. [Emmaus, Pa.] : [New York]: Rodale ; Distributed to the book trade by St. Martin's Press, 2003.
एमएलए (8वां संस्करण) प्रशस्ति पत्रBarrios, Dagny Scott. Runner's World Complete Guide to Trail Running. Rodale ; Distributed to the book trade by St. Martin's Press, 2003.
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