APA aipamena

Van Hoorn, J. (2007). Play at the center of the curriculum (4th ed.). Pearson/Merrill Prentice Hall.

Chicago Style aipamena

Van Hoorn, Judith. Play at the Center of the Curriculum. 4th ed. Upper Saddle River, N.J: Pearson/Merrill Prentice Hall, 2007.

MLA aipamena

Van Hoorn, Judith. Play at the Center of the Curriculum. 4th ed. Pearson/Merrill Prentice Hall, 2007.