APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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