APA (7th ed.) Citation

Gabel, R. A. (1987). Signals and linear systems (3rd ed.). Wiley.

Chicago Style (17th ed.) Citation

Gabel, Robert A. Signals and Linear Systems. 3rd ed. New York: Wiley, 1987.

MLA (9th ed.) Citation

Gabel, Robert A. Signals and Linear Systems. 3rd ed. Wiley, 1987.