APA
Oppenheim A. V., Buck J. R. & Schafer R. W.Discrete - time signal processing. New Delhi: .
Chicago
Oppenheim Alan V, Buck John R and Schafer Ronald W.Discrete - time signal processing. New Delhi: .
Harvard
Oppenheim A. V., Buck J. R. and Schafer R. W.Discrete - time signal processing. New Delhi: .
MLA
Oppenheim Alan V, Buck John R and Schafer Ronald W.New Delhi: . .