Cita APA (7a ed.)

Leo XIII, P. (1889). Allocution of Our Most Holy Father, Pope Leo XIII: Delivered in consistory on the 30th of June, 1889. London?.

Cita Chicago Style (17a ed.)

Leo XIII, Pope. Allocution of Our Most Holy Father, Pope Leo XIII: Delivered in Consistory on the 30th of June, 1889. London?, 1889.

Cita MLA (8a ed.)

Leo XIII, Pope. Allocution of Our Most Holy Father, Pope Leo XIII: Delivered in Consistory on the 30th of June, 1889. London?, 1889.