Numeroff, L. J., & Munsinger, L. (2000). What grandmas do best: What grandpas do best. Simon & Schuster Books for Young Readers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNumeroff, Laura Joffe, और Lynn Munsinger. What Grandmas Do Best: What Grandpas Do Best. New York: Simon & Schuster Books for Young Readers, 2000.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNumeroff, Laura Joffe, और Lynn Munsinger. What Grandmas Do Best: What Grandpas Do Best. Simon & Schuster Books for Young Readers, 2000.
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