APA Style

Whittingto, O, R., Pany, K. (2016). Principles of Auditing & Other Assurance Services (Twentieth Edition). New York: McGraw-Hill Education.

MLA Style

Whittingto, O., Ray., Pany, Kurt. "Principles of Auditing & Other Assurance Services". Twentieth Edition New York: McGraw-Hill Education, 2016. Text.