Cita APA (7th ed.)

Shelly, G. B. (2005). Systems analysis and design (6th ed.). Thomson course Technology.

Cita Chicago (17th ed.)

Shelly, Gary B. Systems Analysis and Design. 6th ed. Australia: Thomson course Technology, 2005.

Cita MLA (9th ed.)

Shelly, Gary B. Systems Analysis and Design. 6th ed. Thomson course Technology, 2005.