- The Qumran Community (Cambridge Commentaries on Writings of the Jewish & Christian World 200 BC to AD 200, Vol. 2)
- Translating the Bible: The Ethiopic Version of the Old Testament - The Schweich Lectures on Biblical Archaeology, 1995: Schweich Lecture (Schweich Lectures on Biblical Archaeology)
- The Septuagint and Messianism: Colloquium Biblicum Lovaniense Liii, July 27-29, 2004 (Bibliotheca Ephemeridum Theologicarum Lovaniensium) (Bibliotheca Ephemeridum Theologicarum Lovaniensium)
- The Ethiopic Book of Enoch: A New Edition in the Light of the Aramaic Dead Sea Fragments (Vol. 1: Text and Apparatus & Vol. 2: Introduction, Translation and Commentary)
- The Ethiopic Text of the Book of Ezekiel: A Critical Edition