APA (7th ed.) Zitazioa
Ward, P. (2008). Database management systems (2nd ed.). Cenage Learning.
Chicago Style (17th ed.) Zitazioa
Ward, Patricia. Database Management Systems. 2nd ed. London: Cenage Learning, 2008.
MLA (9th ed.) Zitazioa
Ward, Patricia. Database Management Systems. 2nd ed. Cenage Learning, 2008.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.