Cita APA (7th ed.)

Skidmore, S. (1990). Introducing systems design (2th .ed.). NCC Blackwell.

Cita Chicago (17th ed.)

Skidmore, Steve. Introducing Systems Design. 2th .ed. Manchester: NCC Blackwell, 1990.

Cita MLA (9th ed.)

Skidmore, Steve. Introducing Systems Design. 2th .ed. NCC Blackwell, 1990.