Ruhlman, M. (2009). Ratio: The simple codes behind the craft of everyday cooking (1st Scribner hardcover ed.). Scribner.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRuhlman, Michael. Ratio: The Simple Codes Behind the Craft of Everyday Cooking. 1st Scribner hardcover ed. New York: Scribner, 2009.
एमएलए (8वां संस्करण) प्रशस्ति पत्रRuhlman, Michael. Ratio: The Simple Codes Behind the Craft of Everyday Cooking. 1st Scribner hardcover ed. Scribner, 2009.
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