Asimov, I. (1983). The caves of steel (1st Ballantine books ed.). Ballantine Books.
Chicago Style (17. basım) AtıfAsimov, Isaac. The Caves of Steel. 1st Ballantine books ed. New York: Ballantine Books, 1983.
MLA (8th ed.) AtıfAsimov, Isaac. The Caves of Steel. 1st Ballantine books ed. Ballantine Books, 1983.
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