Vogüé, E. (1902). Pope Leo XIII: A character study. Catholic Truth Society.
Lua i Stíl Chicago (17ú heag.)Vogüé, Eugène-Melchior. Pope Leo XIII: A Character Study. San Francisco: Catholic Truth Society, 1902.
Lua MLA (8ú heag.)Vogüé, Eugène-Melchior. Pope Leo XIII: A Character Study. Catholic Truth Society, 1902.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.