Author
- Muḥammad ibn ʻAbbād Khilāṭī1
- Muḥammad ibn ʻAbd al-Ghanī Ibn Nuqṭah1
- Muḥammad ibn ʻAlī Ibn Hāniʼ1
- Nado de Tolomeo1
- Nasir al-Din al-Tusi1
- Nicholas of Salerno1
- Pepo d'Antonio di Lando Degli Albizzi1
- Petrus Comestor1
- Petrus Riga1
- Pseudo Bernard of Clairvaux1
- Ptolemy1
- Ranulf Higden1
- Rashid-al-Din Hamadani1
- Raymond of Penyafort1
- Richard Maidstone1
- Robert Gazeley1
- Robert de Sorbon1
- Robert of Gloucester1
- Roman Catholic Archdiocese of Siena1
- Salomon ibn Parhon1