APA

Hirst C. C., Michaelis E., . (1983). Retarded kids need to play: a manual for parents and other teachers : includes ideas and programs for involving retarded children in physical activities. New York: Leisure Press.

Chicago

Hirst Cyntha C, Michaelis Elaine, . 1983. Retarded kids need to play: a manual for parents and other teachers : includes ideas and programs for involving retarded children in physical activities. New York: Leisure Press.

Harvard

Hirst C. C., Michaelis E., . (1983). Retarded kids need to play: a manual for parents and other teachers : includes ideas and programs for involving retarded children in physical activities. New York: Leisure Press.

MLA

Hirst Cyntha C, Michaelis Elaine, . Retarded kids need to play: a manual for parents and other teachers : includes ideas and programs for involving retarded children in physical activities. New York: Leisure Press. 1983.