Leo XIII, P. (1889). Allocution of His Holiness Pope Leo XIII: Delivered in consistory, June 30th, 1889. S.l..
Lua i Stíl Chicago (17ú heag.)Leo XIII, Pope. Allocution of His Holiness Pope Leo XIII: Delivered in Consistory, June 30th, 1889. S.l., 1889.
Lua MLA (8ú heag.)Leo XIII, Pope. Allocution of His Holiness Pope Leo XIII: Delivered in Consistory, June 30th, 1889. S.l., 1889.
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