Ash Wednesday
- 1. The Getty Art & Architecture Thesaurus. 300069636. The J. Paul Getty Trust, 2000.
- 2. “Ash Wednesday.” The Oxford Dictionary of the Christian Church.
- 3. Ash Wednesday. Wikipedia.
- 4. Gajanan, Mahita. Here's Where the Ashes for Ash Wednesday Come From. TIME Magazine. 2017.
- 5. The Editors of Encyclopaedia Britannica. Ash Wednesday. Encyclopaedia Britannica Online.
- 6. Thurston, Herbert. “Ash Wednesday.” The Catholic Encyclopedia. 1907.