Παραπομπή APA

Klein, F. (1980). Famous problems and other monographs (23.).

Παραπομπή Chicago Style

Klein, F. Famous Problems and Other Monographs. 23. AMS Chelsea Publishing Co., New York, 1980.

Παραπομπή MLA

Klein, F. Famous Problems and Other Monographs. 23. 1980.