APA引文

Van Hoorn, J. L. (1993). Play at the center of the curriculum. Merrill.

Chicago Style (17th ed.) Citation

Van Hoorn, Judith Lieberman. Play at the Center of the Curriculum. New York: Merrill, 1993.

MLA引文

Van Hoorn, Judith Lieberman. Play at the Center of the Curriculum. Merrill, 1993.