APA (7th ed.) Citation

District of Columbia. Board of Education. (1931). Course of study in English, kindergarten to 6th grade, elementary schools. U.S. GPO.

Chicago Style (17th ed.) Citation

District of Columbia. Board of Education. Course of Study in English, Kindergarten to 6th Grade, Elementary Schools. Washington: U.S. GPO, 1931.

MLA (9th ed.) Citation

District of Columbia. Board of Education. Course of Study in English, Kindergarten to 6th Grade, Elementary Schools. U.S. GPO, 1931.