- Textual Sources for the Study of Zoroastrianism (Textual Sources for the Study of Religion)
- Zoroastrians: Their Religious Beliefs and Practices (Library of Religious Beliefs & Practices)
- Zoroastrianism: Its Antiquity and Constant Vigour
- A Reader in Manichaean Middle Persian and Parthian. (Textes Et Mimoires, Tome II).
- A Persian Stronghold of Zoroastrianism