APA (7th ed.) Zitazioa

Johnston, J., & Nahmad-Williams, L. (2009). Early childhood studies. Pearson.

Chicago Style (17th ed.) Zitazioa

Johnston, Jane, eta Lindy Nahmad-Williams. Early Childhood Studies. Harlow, England: Pearson, 2009.

MLA (9th ed.) Zitazioa

Johnston, Jane, eta Lindy Nahmad-Williams. Early Childhood Studies. Pearson, 2009.