APA-referens (7:e uppl.)

Gorgen, C. P. (1963). Catholic conscientious objectors. s.n..

Chicago-referens (17:e uppl.)

Gorgen, Carol Perry. Catholic Conscientious Objectors. [United States: s.n., 1963.

MLA-referens (8:e uppl.)

Gorgen, Carol Perry. Catholic Conscientious Objectors. s.n., 1963.