APA aipamena

ULLMAN J.D. (1992). PRINCIPAL OF DATA BASE SYSTEM. GALGOTIA PUB.

Chicago Style aipamena

ULLMAN J.D. PRINCIPAL OF DATA BASE SYSTEM. GALGOTIA PUB, 1992.

MLA aipamena

ULLMAN J.D. PRINCIPAL OF DATA BASE SYSTEM. GALGOTIA PUB, 1992.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.