Cita APA (7a ed.)

Gregory, P. H. (2020). CISA certified information systems auditor exam guide (Fourth edition.). McGraw-Hill Education.

Cita Chicago Style (17a ed.)

Gregory, Peter H. CISA Certified Information Systems Auditor Exam Guide. Fourth edition. New York: McGraw-Hill Education, 2020.

Cita MLA (9a ed.)

Gregory, Peter H. CISA Certified Information Systems Auditor Exam Guide. Fourth edition. McGraw-Hill Education, 2020.