Engelking, R. (1989). General topology (Revised and complete ed.). Berlin: Heldermann Verlag.
Chicago Stili AlıntıEngelking, Ryszard. General Topology. Revised and complete ed. Berlin: Heldermann Verlag, 1989.
MLA AlıntıEngelking, Ryszard. General Topology. Revised and complete ed. Berlin: Heldermann Verlag, 1989.
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