Butterworth, C., & Gaggiotti, L. (2011). How did that get in my lunchbox?: The story of food (1st U.S. ed., Reinforced trade ed.). Candlewick Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रButterworth, Christine, और Lucia Gaggiotti. How Did That Get in My Lunchbox?: The Story of Food. 1st U.S. ed., Reinforced trade ed. Somerville, Mass.: Candlewick Press, 2011.
एमएलए (8वां संस्करण) प्रशस्ति पत्रButterworth, Christine, और Lucia Gaggiotti. How Did That Get in My Lunchbox?: The Story of Food. 1st U.S. ed., Reinforced trade ed. Candlewick Press, 2011.
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