Graham, C. (2015). The chicken keeper's problem solver. Quarry Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGraham, Chris. The Chicken Keeper's Problem Solver. Beverly, MA: Quarry Books, 2015.
एमएलए (8वां संस्करण) प्रशस्ति पत्रGraham, Chris. The Chicken Keeper's Problem Solver. Quarry Books, 2015.
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