Παραπομπή APA

Gemignani, M. C. (1972). Elementary topology (23.).

Παραπομπή Chicago Style

Gemignani, Michael C. Elementary Topology. 23. Addison-Wesley Publishing Co. Inc., Massachusetts, 1972.

Παραπομπή MLA

Gemignani, Michael C. Elementary Topology. 23. 1972.