Ungerer, T. (2015). Snail, where are you? Phaidon Press Limited.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रUngerer, Tomi. Snail, Where Are You? London: Phaidon Press Limited, 2015.
एमएलए (8वां संस्करण) प्रशस्ति पत्रUngerer, Tomi. Snail, Where Are You? Phaidon Press Limited, 2015.
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