Harley, B., & Gustavson, A. (2017). Charlie Bumpers vs. his big blabby mouth (First edition.). Peachtree Publishers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHarley, Bill, और Adam Gustavson. Charlie Bumpers Vs. His Big Blabby Mouth. First edition. Atlanta: Peachtree Publishers, 2017.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHarley, Bill, और Adam Gustavson. Charlie Bumpers Vs. His Big Blabby Mouth. First edition. Peachtree Publishers, 2017.
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