Sloan, H. G. (2013). Counting by 7s. Dial Books for Young Readers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSloan, Holly Goldberg. Counting by 7s. New York, New York: Dial Books for Young Readers, 2013.
एमएलए (8वां संस्करण) प्रशस्ति पत्रSloan, Holly Goldberg. Counting by 7s. Dial Books for Young Readers, 2013.
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