DATE (C.J.), . (2001). An Introduction to Database Systems. New Delhi: Pearson Education Delhi, Harlow, Singapore.
DATE (C.J.), . 2001. An Introduction to Database Systems. New Delhi: Pearson Education Delhi, Harlow, Singapore.
DATE (C.J.), . An Introduction to Database Systems. New Delhi: Pearson Education Delhi, Harlow, Singapore. 2001.
