Citazione APA

Gabel,, R. A., & Roberts,, R. A. (2009). Signals and linear systems (3rd.). John wiley and sons.

Stile di citazione Chicago

Gabel,, Robert A., e Richard A. Roberts. Signals and Linear Systems. 3rd. New York: John wiley and sons, 2009.

Citazione MLA

Gabel,, Robert A., e Richard A. Roberts. Signals and Linear Systems. 3rd. John wiley and sons, 2009.