| title | ISBN-13 (ISBN-10) | year of publica- tion |
|---|---|---|
| Muslim World: Age of the Caliphs | 978-0-685-23328-3 (0-685-23328-6) | 1960 |
| Persian Historiography And Geography. Bertold Spuler on Major Works Produced in Iran, the Caucasus, Central Asia, India and Early Ottoman Turkey | 978-9971-77-488-2 (9971-77-488-7) | 2003 |