Thomas Craven Film Corporation, Barbieri, E., & Fratello, L. (2004). Backyard soccer drills. Youth Sports Club.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रThomas Craven Film Corporation, Ernest Barbieri, और Lou Fratello. Backyard Soccer Drills. Valley Cottage, NY: Youth Sports Club, 2004.
एमएलए (8वां संस्करण) प्रशस्ति पत्रThomas Craven Film Corporation, et al. Backyard Soccer Drills. Youth Sports Club, 2004.
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