Pittsburgh International Conference on General Topology and its Applications 2d, University of Pittsburgh, Alo, R. A., Heath, R. W., & Nagata, J. (1974). TOPO 72 - general topology and its applications: Second Pittsburgh International Conference, December 18-22, 1972. Springer-Verlag.
Παραπομπή σε μορφή Chicago (17η εκδ.)Pittsburgh International Conference on General Topology and its Applications 2d, University of Pittsburgh, Richard A. Alo, Robert W. Heath, και Jun-iti Nagata. TOPO 72 - General Topology and Its Applications: Second Pittsburgh International Conference, December 18-22, 1972. Berlin ; New York: Springer-Verlag, 1974.
Παραπομπή σε μορφή MLA (8th εκδ.)Pittsburgh International Conference on General Topology and its Applications 2d, University of Pittsburgh, et al. TOPO 72 - General Topology and Its Applications: Second Pittsburgh International Conference, December 18-22, 1972. Springer-Verlag, 1974.
