Dyfyniad APA

Ullman, J. D. (2008). A first course in database systems. New Jersey: Prenticice Hall.

Dyfyniad Arddull Chicago

Ullman, Jefferey D. A First Course in Database Systems. New Jersey: Prenticice Hall, 2008.

Dyfyniad MLA

Ullman, Jefferey D. A First Course in Database Systems. New Jersey: Prenticice Hall, 2008.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.