Croom, Fred H.
Principles of topology/Fred H. Croom
Sounders College , 1989
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"Topology vol. II: colloquia mathematica societatis janos bolyai, 23"
"Amsterdam: North-Holland Publishing Company, 1980",
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Greever, John
Theory and examples of point-set topology
Brooks/Cole, 1969
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Hocking, John G.
Topology/ John G. Hocking, Gail S. Young
Addison-Wesley, 1962
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Mansfield, Maynard J.
Introduction to topology
Robert E. Krieger, 1972
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