American Psychological Association
O`Brien, James A ( 1985 ). Introduction Information Systems ( 12 ed. ). Tata Mcgraw-Hill Publishing Compay Limited.
Modern Language Association
O`Brien, James A. Introduction Information Systems . 12 . Tata Mcgraw-Hill Publishing Compay Limited. 1985
Chicago Citation
O`Brien, James A. Introduction Information Systems . 12 .New Delhi
: Tata Mcgraw-Hill Publishing Compay Limited, 1985.
American Medical Association
O`Brien, James A. Introduction Information Systems . Tata Mcgraw-Hill Publishing Compay Limited; 1985.
