Παραπομπή APA

Feintuch, A., & Sacks, R. (1982). System theory: A Hilbert space approach. Academic Press.

Παραπομπή Chicago Style

Feintuch, Avaham, και Richard Sacks. System Theory: A Hilbert Space Approach. New York: Academic Press, 1982.

Παραπομπή MLA

Feintuch, Avaham, και Richard Sacks. System Theory: A Hilbert Space Approach. Academic Press, 1982.