DRUP Software. [Purchase order organizer software] , 2.0.1.5.
Cita Chicago (17th ed.)DRUP Software. [Purchase Order Organizer Software] , 2.0.1.5.
Cita MLA (9th ed.)DRUP Software. [Purchase Order Organizer Software] , 2.0.1.5.
Atenció: Aquestes cites poden no estar 100% correctes.