> Mehrbändiges Werk
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Islamic spirituality 1 Foundations ed. by Seyyed Hossein Nasr
London: Routledge & Kegan Paul, 1997
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Jewish spirituality 1 From the Bible through the Middle Ages ed. by Arthur Green
New York: Crossroad, 1994
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Jewish spirituality 2 From the Sixteenth-century revival to the present ed. by Arthur Green
New York: Crossroad, 1994
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Christian spirituality 3 Post-reformation and modern / ed. by Louis Dupré
London: Routledge & Kegan Paul, 1989
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Christian spirituality 1 Origins to the twelfth century / ed. by Bernard McGinn
London: Routledge & Kegan Paul, 1985