Proceedings of the ... annual meeting of the National Council of Primary Education.

MLA

National Council of Primary Education (U.S.). Proceedings of the ... annual meeting of the National Council of Primary Education. Washington, D.C. : Govt. Printing Office, 1920-

APA

National Council of Primary Education (U.S.). (1919). Proceedings of the ... annual meeting of the National Council of Primary Education. Washington, D.C. : Govt. Printing Office.

Chicago

National Council of Primary Education (U.S.). Proceedings of the ... annual meeting of the National Council of Primary Education. Washington, D.C. : Govt. Printing Office, 1920-