Velpuri, R. (2002). OCP oracle9i database: Fundamentals II exam guide. Tata McGraw Hill Education Private Limited.
Chicago-viite (17. p.)Velpuri, Rama. OCP Oracle9i Database: Fundamentals II Exam Guide. Delhi: Tata McGraw Hill Education Private Limited, 2002.
MLA-viite (9. p.)Velpuri, Rama. OCP Oracle9i Database: Fundamentals II Exam Guide. Tata McGraw Hill Education Private Limited, 2002.
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