APA (7 ম সংস্করণ) উদ্ধৃতি

Knopp, K., Bers, L., & Bagemihl, F. (1948). Problem book in the theory of functions (First American edition.). Dover Publications, Inc.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Knopp, Konrad, L. Bers, এবং F. Bagemihl. Problem Book in the Theory of Functions. First American edition. New York: Dover Publications, Inc, 1948.

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

Knopp, Konrad, et al. Problem Book in the Theory of Functions. First American edition. Dover Publications, Inc, 1948.