Title
- Processional9
- Professions2
- Proprium de tempore1
- Psalms8
- Psalter21
- Radnor Missal1
- Rationale divinorum officiorum2
- Registrum ordinis Cysterciensis1
- Religious text2
- Religious texts1
- Report1
- Responsorium1
- Ritual2
- Rituale Dominicanum1
- Rule of Saint Benedict1
- Sacramentary1
- Samaritan liturgy1
- Sarum manual1
- Seder prayers6
- Selections from the Yemenite Maḥzor, for Sukkot, Shemini ʻatseret, and Śimḥat Torah1