Coggins, D. (2021). The optimist: A case for the fly fishing life (First Scribner hardcover edition.). Scribner.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCoggins, David. The Optimist: A Case for the Fly Fishing Life. First Scribner hardcover edition. New York: Scribner, 2021.
एमएलए (8वां संस्करण) प्रशस्ति पत्रCoggins, David. The Optimist: A Case for the Fly Fishing Life. First Scribner hardcover edition. Scribner, 2021.
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