| title | ISBN-13 | year of publication |
|---|---|---|
| A Light in the Heavens: Great Encyclical Letters Of Pope Leo XIII | 978-0-89555-529-8 | 1995 |
| Leo XIII: On The Condition of the Working classes | 978-0-8198-1492-0 | 2000 |
| On Jesus Christ Our Redeemer | 978-0-8198-3949-7 | 1978 |
| Pope Leo XIII Complete Set of Encyclicals Volume II of IV | 978-1-5330-2850-1 | 2016 |
| Satis Cognitum: Encyclical on the Unity of the Church | 978-1-892331-34-2 | 2005 |
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