Fenson, L., Tomasello, M., Mervis, C. B., & Stiles, J. (1994). Variability in early communicative development. Society for Research in Child Development.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रFenson, Larry, Michael Tomasello, Carolyn B. Mervis, और Joan Stiles. Variability in Early Communicative Development. Chicago, Ill: Society for Research in Child Development, 1994.
एमएलए (9वां संस्करण) प्रशस्ति पत्रFenson, Larry, et al. Variability in Early Communicative Development. Society for Research in Child Development, 1994.
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