| title | media type | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|---|
| The African Prester John and the Birth of Ethiopian-European Relations, 1402-1555 | Paperback | 978-0-367-20451-8 (0-367-20451-7) | 2019 |
| The African Prester John and the Birth of Ethiopian-European Relations, 1402-1555 | Hardcover | 978-1-4724-1891-3 (1-4724-1891-3) | 2016 |