Vogüé, E. (1902). Pope Leo XIII: A character study. Catholic Truth Society.
Chicago Style (17. basım) AtıfVogüé, Eugène-Melchior. Pope Leo XIII: A Character Study. San Francisco: Catholic Truth Society, 1902.
MLA (8th ed.) AtıfVogüé, Eugène-Melchior. Pope Leo XIII: A Character Study. Catholic Truth Society, 1902.
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