| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| A History of Indigenous Slavery in Ghana From the 15th to the 19th Century | 978-9988-550-32-5 (9988-550-32-4) | 2004 |
| A History of Indigenous Slavery in Ghana: From the 15th to the 19th Century | 978-9988-550-95-0 (9988-550-95-2) | 2004 |