APA Style

Proakis, J, G., Ingle, V, K. (2017). Digital Signal Processing Using MATLAB® : A Problem Solving Companion. Fourth International Edition (Fourth International Edition). United States of America: Cengage Learning.

MLA Style

Proakis, John, G., Ingle, Vinay, K.. "Digital Signal Processing Using MATLAB® : A Problem Solving Companion. Fourth International Edition". Fourth International Edition United States of America: Cengage Learning, 2017. Text.