Lewis, C. (2014). The illustrated guide to cows: How to choose them, how to keep them. Bloomsbury.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रLewis, Celia. The Illustrated Guide to Cows: How to Choose Them, How to Keep Them. New York: Bloomsbury, 2014.
एमएलए (8वां संस्करण) प्रशस्ति पत्रLewis, Celia. The Illustrated Guide to Cows: How to Choose Them, How to Keep Them. Bloomsbury, 2014.
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