APA (7th ed.) Zitazioa

Date, C. (1981). An Introduction to database systems (3rd ed.). Narosa.

Chicago Style (17th ed.) Zitazioa

Date, C.J. An Introduction to Database Systems. 3rd ed. New Delhi: Narosa, 1981.

MLA (9th ed.) Zitazioa

Date, C.J. An Introduction to Database Systems. 3rd ed. Narosa, 1981.