APA aipamena

Fenson, L., Tomasello, M., Mervis, C. B., & Stiles, J. (1994). Variability in early communicative development. Society for Research in Child Development.

Chicago Style aipamena

Fenson, Larry, Michael Tomasello, Carolyn B. Mervis, and Joan Stiles. Variability in Early Communicative Development. Chicago, Ill: Society for Research in Child Development, 1994.

MLA aipamena

Fenson, Larry, et al. Variability in Early Communicative Development. Society for Research in Child Development, 1994.