Cita APA (7th ed.)

Gennick, J., & Luers, T. (2000). Sams teach yourself PL/SQL in 21 days (2nd ed.). Techmedia..

Cita Chicago (17th ed.)

Gennick, Jonathan, i Tom Luers. Sams Teach Yourself PL/SQL in 21 Days. 2nd ed. Indianapolis, Ind. ; New Delhi: Techmedia., 2000.

Cita MLA (8th ed.)

Gennick, Jonathan, i Tom Luers. Sams Teach Yourself PL/SQL in 21 Days. 2nd ed. Techmedia., 2000.