APA (7th ed.) Citation

Haykin, S. S., & Van Veen, B. (1999). Signals and systems. John Wiley & Sons.

Chicago Style (17th ed.) Citation

Haykin, Simon S., and Barry Van Veen. Signals and Systems. New York [etc.]: John Wiley & Sons, 1999.

MLA (9th ed.) Citation

Haykin, Simon S., and Barry Van Veen. Signals and Systems. John Wiley & Sons, 1999.