APA استشهاد

Date, C. (2002). An introduction to database systems.7th Ed. (7th ed.). Pearson-education.

استشهاد بنمط شيكاغو

Date, C.J. An Introduction to Database Systems.7th Ed. 7th ed. New Delhi: Pearson-education, 2002.

MLA استشهاد

Date, C.J. An Introduction to Database Systems.7th Ed. 7th ed. Pearson-education, 2002.