Douglass, H. P. (1947). The greater Cincinnati church study. Council of Churches of Greater Cincinnati.
Chicago-referens (17:e uppl.)Douglass, H. Paul. The Greater Cincinnati Church Study. Cincinnati, Ohio: Council of Churches of Greater Cincinnati, 1947.
MLA-referens (8:e uppl.)Douglass, H. Paul. The Greater Cincinnati Church Study. Council of Churches of Greater Cincinnati, 1947.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.