Kostof, S. (1989). Caves of God: Cappadocia and its churches. New York: Oxford University Press.
Παραπομπή Chicago StyleKostof, Spiro. Caves of God: Cappadocia and Its Churches. New York: Oxford University Press, 1989.
Παραπομπή MLAKostof, Spiro. Caves of God: Cappadocia and Its Churches. New York: Oxford University Press, 1989.
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