APA (7th ed.) Citation

Oppenheim & Willsky. (1997). Signals & systems (2nd ed.). Prentice-Hall International.

Chicago Style (17th ed.) Citation

Oppenheim and Willsky. Signals & Systems. 2nd ed. New Jersey: Prentice-Hall International, 1997.

MLA (8th ed.) Citation

Oppenheim and Willsky. Signals & Systems. 2nd ed. Prentice-Hall International, 1997.