APA ציטוט

Jeffrey D Ullman Jennifer Widom. (2007). First course in Database systems. Pearson education.

Chicago Edition Citation

Jeffrey D Ullman Jennifer Widom. First Course in Database Systems. Delhi: Pearson education, 2007.

ציטוט MLA

Jeffrey D Ullman Jennifer Widom. First Course in Database Systems. Pearson education, 2007.