Brown, J. W., & Churchill, R. V. (2014). Complex variables and applications (Ninth Edition.). McGraw-Hill Education.

Brown, James Ward, and Ruel V. Churchill. Complex Variables and Applications. Ninth Edition. New York, NY: McGraw-Hill Education, 2014.

Brown, James Ward, and Ruel V. Churchill. Complex Variables and Applications. Ninth Edition. McGraw-Hill Education, 2014.