Lay, Steven R., 1944-
Convex sets and their applications
John Wiley & Sons, 1982
 Buku Teks
Infinite and finite sets
edited by A. Hajnal, R. Rado, Vera T. Sos
North-Holland, 1975
 Buku Teks
Theory of sets and topology
edited by Gunter Asser, Jurgen Flachsmeyer, Willi Rinow
Web Deutscher der Wissenschaften, 1972
 Buku Teks
Klir, George J.
Fuzzy sets, uncertainty, and information
Prentice-Hall, 1988
 Buku Teks
Akbulut, Selman
Topology of real algebraic sets
Springer-Verlag, 1992
 Buku Teks