Lua APA (7ú heag.)

Obrien,James A. (2007). Enter prise information Systems (13.). McGraw-Hill Publ.

Lua i Stíl Chicago (17ú heag.)

Obrien,James A. Enter Prise Information Systems. 13. Boston: McGraw-Hill Publ, 2007.

Lua MLA (9ú heag.)

Obrien,James A. Enter Prise Information Systems. 13. McGraw-Hill Publ, 2007.

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