Gaya APA

O'Brien, J, A. (1998). Introduction to Information System, 2ND Alternateed; An intermetworked enterprise perspective (II). New York: McGraw Hill.

Gaya MLA

O'Brien, James, A.. "Introduction to Information System, 2ND Alternateed; An intermetworked enterprise perspective". II New York: McGraw Hill, 1998. Textbook.