Ramakrishna, R. (1998). Database Management systems. McGrowHill.
Dyfyniad Arddull ChicagoRamakrishna, Raghu. Database Management Systems. Boston: McGrowHill, 1998.
Dyfyniad MLARamakrishna, Raghu. Database Management Systems. McGrowHill, 1998.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.