Dugundji, J. (1975). Topology. Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)Dugundji, James. Topology. Nueva Delhi: Prentice-Hall, 1975.
Lua MLA (9ú heag.)Dugundji, James. Topology. Prentice-Hall, 1975.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.