Harper, C. M. (2011). Just Grace and the double surprise. Houghton Mifflin Books for Children.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHarper, Charise Mericle. Just Grace and the Double Surprise. Boston: Houghton Mifflin Books for Children, 2011.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHarper, Charise Mericle. Just Grace and the Double Surprise. Houghton Mifflin Books for Children, 2011.
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