Woods, B. (2008). Motocross history: From local scrambling to world championship MX to freestyle. Crabtree.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWoods, Bob. Motocross History: From Local Scrambling to World Championship MX to Freestyle. St. Catherines, ON ; New York: Crabtree, 2008.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWoods, Bob. Motocross History: From Local Scrambling to World Championship MX to Freestyle. Crabtree, 2008.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.