Παραπομπή APA

Hackworth, R. D. (1969). Mathematical systems: Finite and Infinite. Holt.

Παραπομπή Chicago Style

Hackworth, Robert D. Mathematical Systems: Finite and Infinite. New York: Holt, 1969.

Παραπομπή MLA

Hackworth, Robert D. Mathematical Systems: Finite and Infinite. Holt, 1969.