Willems, M. (2009). Watch me throw the ball! Hyperion Books for Children.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWillems, Mo. Watch Me Throw the Ball! New York: Hyperion Books for Children, 2009.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWillems, Mo. Watch Me Throw the Ball! Hyperion Books for Children, 2009.
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