America's Test Kitchen (Firm). (2017). The perfect cookie: Your ultimate guide to foolproof cookies, brownies & bars. America's Test Kitchen.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAmerica's Test Kitchen (Firm). The Perfect Cookie: Your Ultimate Guide to Foolproof Cookies, Brownies & Bars. Boston, MA: America's Test Kitchen, 2017.
एमएलए (8वां संस्करण) प्रशस्ति पत्रAmerica's Test Kitchen (Firm). The Perfect Cookie: Your Ultimate Guide to Foolproof Cookies, Brownies & Bars. America's Test Kitchen, 2017.
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