National Service Board for Religious Objectors. (1947). Directory of Civilian Public Service, May, 1941 to March, 1947. National Service Board for Religious Objectors.
Chicago Style (17. basım) AtıfNational Service Board for Religious Objectors. Directory of Civilian Public Service, May, 1941 to March, 1947. Washington, D.C.: National Service Board for Religious Objectors, 1947.
MLA (8th ed.) AtıfNational Service Board for Religious Objectors. Directory of Civilian Public Service, May, 1941 to March, 1947. National Service Board for Religious Objectors, 1947.
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