Παραπομπή APA

Pontryagin, L. S. (1966). Topological Groups.-2nd ed (2nd ed.). Gordon and breach, publishers.

Παραπομπή Chicago Style

Pontryagin, L. S. Topological Groups.-2nd Ed. 2nd ed. New York: Gordon and breach, publishers, 1966.

Παραπομπή MLA

Pontryagin, L. S. Topological Groups.-2nd Ed. 2nd ed. Gordon and breach, publishers, 1966.