LIPSCHUTZ, S. Schaum's Outline Of Theory And Problems Of Set Theory And Related Topics Symour Lipschutz. McGraw-Hill.
Chicago-viite (17. p.)LIPSCHUTZ, Seymour. Schaum's Outline Of Theory And Problems Of Set Theory And Related Topics Symour Lipschutz. McGraw-Hill.
MLA-viite (8. p.)LIPSCHUTZ, Seymour. Schaum's Outline Of Theory And Problems Of Set Theory And Related Topics Symour Lipschutz. McGraw-Hill.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.