Citazione Stile APA (7a Edizione)

Frost, J. L., Wortham, S. C., & Reifel, R. S. (2005). Play and child development (2nd edition.). Pearson/Merrill/Prentice Hall.

Citazione stile Chigago Style (17a edizione)

Frost, Joe L., Sue Clark Wortham, e Robert Stuart Reifel. Play and Child Development. 2nd edition. Upper Saddle River, N.J: Pearson/Merrill/Prentice Hall, 2005.

Citatione MLA (9a ed.)

Frost, Joe L., et al. Play and Child Development. 2nd edition. Pearson/Merrill/Prentice Hall, 2005.