Wittmer, D. S., Petersen, S. H., & Puckett, M. B. (2013). The young child: Development from prebirth through age eight (Sixth edition.). Pearson.
Cita Chicago (17th ed.)Wittmer, Donna Sasse, Sandra H. Petersen, i Margaret B. Puckett. The Young Child: Development from Prebirth Through Age Eight. Sixth edition. Boston: Pearson, 2013.
Cita MLA (9th ed.)Wittmer, Donna Sasse, et al. The Young Child: Development from Prebirth Through Age Eight. Sixth edition. Pearson, 2013.
Atenció: Aquestes cites poden no estar 100% correctes.