Gaya APA

Whitten, J, L., Bentley, L, D. (2007). Systems analysis and design for the global enterprise (7 th ed.). New York: McGraw-Hill Irwin.

Gaya MLA

Whitten, Jeffery, L.., Bentley, Lonnie, D.. "Systems analysis and design for the global enterprise". 7 th ed. New York: McGraw-Hill Irwin, 2007. Text.