Citazione APA

Lightfoot, C., Cole, M., & Cole, S. R. (2009). Development of children (6th.). Worth.

Stile di citazione Chicago

Lightfoot, Cynthia, Michael Cole, e Sheila R. Cole. Development of Children. 6th. New York: Worth, 2009.

Citazione MLA

Lightfoot, Cynthia, et al. Development of Children. 6th. Worth, 2009.