Brown, R. (1968). Elements of modern topology. McGraw-Hill Book Co., Inc.
Lua i Stíl Chicago (17ú heag.)Brown, Ronald. Elements of Modern Topology. London: McGraw-Hill Book Co., Inc, 1968.
Lua MLA (9ú heag.)Brown, Ronald. Elements of Modern Topology. McGraw-Hill Book Co., Inc, 1968.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.