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.