Kuratowski, K., Engelking, R., & Boron, L. F. (1972). Introduction to set theory and topology (Completely rev. 2nd English ed.). Pergamon Press ; PWN-Polish Scientific Publishers.
Citazione stile Chigago Style (17a edizione)Kuratowski, Kazimierz, Ryszard Engelking, e Leo F. Boron. Introduction to Set Theory and Topology. Completely rev. 2nd English ed. Oxford : Warszawa: Pergamon Press ; PWN-Polish Scientific Publishers, 1972.
Citatione MLA (9a ed.)Kuratowski, Kazimierz, et al. Introduction to Set Theory and Topology. Completely rev. 2nd English ed. Pergamon Press ; PWN-Polish Scientific Publishers, 1972.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.