APA Style

Proakis, J, G., Manolakis, D, G. (2014). Digital Signal Processing: Pearson New International Edition (Ed.4). United Kingdom: Pearson Education.

MLA Style

Proakis, John, G., Manolakis, Dimitris, G.. "Digital Signal Processing: Pearson New International Edition". Ed.4 United Kingdom: Pearson Education, 2014. Text.