APA aipamena

Uliman Jeffrey, D. (1991). Principles of database systems. Galgotia publications.

Chicago Style aipamena

Uliman Jeffrey, D. Principles of Database Systems. NewDelhi: Galgotia publications, 1991.

MLA aipamena

Uliman Jeffrey, D. Principles of Database Systems. Galgotia publications, 1991.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.