Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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