G.O. · G S · George O Sayles · O's
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| The English Parliament in the Middle Ages | 978-0-9506882-1-3 (0-9506882-1-5) | 1981 | H. G. Richardson |
| The King's Parliament of England | 978-0-393-09322-3 (0-393-09322-0) | 1974 | |
| The Medieval Foundations of England | 978-0-367-20714-4 (0-367-20714-1) | 2019 | |
Hambledon Continuum · Routledge · W. W. Norton & Company