Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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