John, of Wales, active 13th century (Ps.-Grosseteste): Summa iustitiae (De septem vitiis) [Latin]
- Bloomfield 1586, 2881, 4699
- Glorieux, Arts, 490bo
- J. Swanson, John of Wales, A study of the works and ideas of a thirteenth-century friar, Cambridge 1989, App. 1 no. 7
- Thomson, Grosseteste, 263–5
- unpr. (except for the prologue, ed. S. Wenzel in Ad litteram: authoritative texts and their medieval readers, ed. M. D. Jordan and K. Emery, (1992))
The above references reflect only the current coverage of the online catalogue and may not be comprehensive.