Παραπομπή APA

Knopp, K. (1952). Problem book in the theory of fuctions , problems in the advanced theory of functions. Dover.

Παραπομπή Chicago Style

Knopp, Konard. Problem Book in the Theory of Fuctions , Problems in the Advanced Theory of Functions. New York: Dover, 1952.

Παραπομπή MLA

Knopp, Konard. Problem Book in the Theory of Fuctions , Problems in the Advanced Theory of Functions. Dover, 1952.