District of Columbia. Department of Playgrounds & ProQuest (Firm). (1912). The playground movement in the District of Columbia. Report to the Commissioners of the District of Columbia. [publisher not identified].
Chicago Style (17th ed.) CitationDistrict of Columbia. Department of Playgrounds and ProQuest (Firm). The Playground Movement in the District of Columbia. Report to the Commissioners of the District of Columbia. Washington: [publisher not identified], 1912.
MLA (9th ed.) CitationDistrict of Columbia. Department of Playgrounds and ProQuest (Firm). The Playground Movement in the District of Columbia. Report to the Commissioners of the District of Columbia. [publisher not identified], 1912.
Warning: These citations may not always be 100% accurate.