| English | eng-000 |
| Gregorian Reform | |
| català | cat-000 | Reforma gregoriana |
| dansk | dan-000 | Den gregorianske reform |
| Deutsch | deu-000 | Gregorianische Reformen |
| français | fra-000 | Réforme grégorienne |
| italiano | ita-000 | Riforma gregoriana |
| 日本語 | jpn-000 | グレゴリウス改革 |
| português | por-000 | Reforma gregoriana |
| español | spa-000 | Reforma gregoriana |
| svenska | swe-000 | Gregorianska reformen |