The normal course in play;
practical material for use in the training of playground and recreation workers,
prepared by the Playground and Recreation Association of America, under the direction of Joseph Lee, president.

APA Citation

National Recreation Association. (1925). The normal course in play: practical material for use in the training of playground and recreation workers. New York: A. S. Barnes and Company.

MLA Citation

National Recreation Association. The Normal Course In Play: Practical Material for Use In the Training of Playground And Recreation Workers. New York: A. S. Barnes and Company, 1925.

Warning: These citations may not always be complete (especially for serials).