Recreation; a problem of grass roots :
the why, the what and the how of public recreation.
APA Citation
National Recreation Association. (1948). Recreation; a problem of grass roots: the why, the what and the how of public recreation. New York.
MLA Citation
National Recreation Association. Recreation; a Problem of Grass Roots: the Why, the What And the How of Public Recreation. New York, 1948.
Warning: These citations may not always be complete (especially for serials).