Gaya APA

Levine, K, S, M, J, H, A, S, C. (2002). Quantitative Development in Infancy and Early Childhood . New York: Oxford University Press.

Gaya MLA

Levine, Kelly, S., Mix,, Janellen, Huttenlocher, And, Susan, Cohen. "Quantitative Development in Infancy and Early Childhood". New York: Oxford University Press, 2002. Text.