Educational Policies Commission. (1940). Learning the ways of democracy: A case book of civic education. Educational Policies Commission, National Education Association of the United States and the American Association of School Administrators.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)Educational Policies Commission. Learning the Ways of Democracy: A Case Book of Civic Education. Washington, D.C.: Educational Policies Commission, National Education Association of the United States and the American Association of School Administrators, 1940.
Trích dẫn kiểu MLA (xuất bản lần thứ 8)Educational Policies Commission. Learning the Ways of Democracy: A Case Book of Civic Education. Educational Policies Commission, National Education Association of the United States and the American Association of School Administrators, 1940.