Cita APA (7a ed.)

O'Hearn, S. (2017). Oca oracle database sql exam guide: (exam 1z0-071) (1st edition.). McGraw-Hill Education.

Cita Chicago Style (17a ed.)

O'Hearn, Steve. Oca Oracle Database Sql Exam Guide: (exam 1z0-071). 1st edition. New York, United States of America: McGraw-Hill Education, 2017.

Cita MLA (9a ed.)

O'Hearn, Steve. Oca Oracle Database Sql Exam Guide: (exam 1z0-071). 1st edition. McGraw-Hill Education, 2017.