Frydenborg, K. (2015). Chocolate: Sweet science and dark secrets of the world's favorite treat. Houghton Mifflin Harcourt.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रFrydenborg, Kay. Chocolate: Sweet Science and Dark Secrets of the World's Favorite Treat. Boston: Houghton Mifflin Harcourt, 2015.
एमएलए (8वां संस्करण) प्रशस्ति पत्रFrydenborg, Kay. Chocolate: Sweet Science and Dark Secrets of the World's Favorite Treat. Houghton Mifflin Harcourt, 2015.
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