Koehler, J. (2017). Where the wild coffee grows: The untold story of coffee from the cloud forests of Ethiopia to your cup. Bloomsbury.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKoehler, Jeff. Where the Wild Coffee Grows: The Untold Story of Coffee from the Cloud Forests of Ethiopia to Your Cup. New York: Bloomsbury, 2017.
एमएलए (8वां संस्करण) प्रशस्ति पत्रKoehler, Jeff. Where the Wild Coffee Grows: The Untold Story of Coffee from the Cloud Forests of Ethiopia to Your Cup. Bloomsbury, 2017.
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