APA সাইটেশন

Alward, K., Hoorn, J. V., Nourot, P., & Scales, B. (1993). Play at the center of the curriculum. New York: Maxwell Macmillan International.

শিকাগো স্টাইলে সাইটেশন

Alward, Keith, Judith Van Hoorn, Patricia Nourot, এবং Barbara Scales. Play At the Center of the Curriculum. New York: Maxwell Macmillan International, 1993.

এমএলএ সাইটেশন

Alward, Keith, Judith Van Hoorn, Patricia Nourot, এবং Barbara Scales. Play At the Center of the Curriculum. New York: Maxwell Macmillan International, 1993.