APA-referens (7:e uppl.)

Barnabo, C. (1858). Letter, To: Bishop John Neumann, C.SS.R., From: Cardinal Barnabo, June 30, 1858.

Chicago-referens (17:e uppl.)

Barnabo, Cardinal. Letter, To: Bishop John Neumann, C.SS.R., From: Cardinal Barnabo, June 30, 1858. 1858.

MLA-referens (8:e uppl.)

Barnabo, Cardinal. Letter, To: Bishop John Neumann, C.SS.R., From: Cardinal Barnabo, June 30, 1858. 1858.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.