ScienceDirect (Online service). Topology and its applications. North-Holland Pub. Co.
Chicago Style (17. basım) AtıfScienceDirect (Online service). Topology and Its Applications. Amsterdam: North-Holland Pub. Co.
MLA (8th ed.) AtıfScienceDirect (Online service). Topology and Its Applications. North-Holland Pub. Co.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..