APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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 (9th ed.) Citation

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