Citazione Stile APA (7a Edizione)

Van Hoorn, J. (2011). Play at the center of the curriculum (5th ed.). Pearson.

Citazione stile Chigago Style (17a edizione)

Van Hoorn, Judith. Play at the Center of the Curriculum. 5th ed. Boston: Pearson, 2011.

Citatione MLA (9a ed.)

Van Hoorn, Judith. Play at the Center of the Curriculum. 5th ed. Pearson, 2011.