LIPSCHUTZ, S. Schaum's Outline Of Theory And Problems Of Set Theory And Related Topics Seymour Lipschutz. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)LIPSCHUTZ, Seymour. Schaum's Outline Of Theory And Problems Of Set Theory And Related Topics Seymour Lipschutz. McGraw-Hill.
Lua MLA (8ú heag.)LIPSCHUTZ, Seymour. Schaum's Outline Of Theory And Problems Of Set Theory And Related Topics Seymour Lipschutz. McGraw-Hill.
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