APA

National Education Association of the United States, . (1961). Elementary school organization: purposes, patterns, perspective. [Wash., D.C.]: .

Chicago

National Education Association of the United States, . 1961. Elementary school organization: purposes, patterns, perspective. [Wash., D.C.]: .

Harvard

National Education Association of the United States, . (1961). Elementary school organization: purposes, patterns, perspective. [Wash., D.C.]: .

MLA

National Education Association of the United States, . Elementary school organization: purposes, patterns, perspective. [Wash., D.C.]: . 1961.