Leo XIII, P. (1889). Allocution of His Holiness Pope Leo XIII: Delivered in consistory, June 30th, 1889. S.l..
Chicago-referens (17:e uppl.)Leo XIII, Pope. Allocution of His Holiness Pope Leo XIII: Delivered in Consistory, June 30th, 1889. S.l., 1889.
MLA-referens (8:e uppl.)Leo XIII, Pope. Allocution of His Holiness Pope Leo XIII: Delivered in Consistory, June 30th, 1889. S.l., 1889.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.