(2001). Oracle 8i certified professional DBA Upgrade Exam guide: (Exam 1Z0-020). New YorK: Osborne/ McGraw- Hill.
Παραπομπή Chicago StyleOracle 8i Certified Professional DBA Upgrade Exam Guide: (Exam 1Z0-020). New YorK: Osborne/ McGraw- Hill, 2001.
Παραπομπή MLAOracle 8i Certified Professional DBA Upgrade Exam Guide: (Exam 1Z0-020). New YorK: Osborne/ McGraw- Hill, 2001.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.