Wolfe, J. M. (1934). Peace Education in the Curriculum of the Schools. Washington, D.C..
Chicago-referens (17:e uppl.)Wolfe, John Marcus. Peace Education in the Curriculum of the Schools. Washington, D.C., 1934.
MLA-referens (8:e uppl.)Wolfe, John Marcus. Peace Education in the Curriculum of the Schools. Washington, D.C., 1934.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.