• Encyclopaedia Britannica. “St. Ignatius of Loyola.”
• Catholic Encyclopedia (New Advent). “St. Ignatius Loyola.”
• Franciscan Media. “Saint of the Day: Saint Ignatius of Loyola.”
• Society of Jesus (Jesuits). “St. Ignatius of Loyola.”
• The Holy See. “Memorial of St. Ignatius of Loyola,” papal homilies and addresses.

Slides are written from The Acutis Project research packet for St. Ignatius of Loyola, which draws on the sources above. Photo credits appear on each picture.