Cita APA (7a ed.)

BPP, edition. (1990). Elements of information of systems (1st edition.). BPP.

Cita Chicago Style (17a ed.)

BPP, edition. Elements of Information of Systems. 1st edition. London: BPP, 1990.

Cita MLA (9a ed.)

BPP, edition. Elements of Information of Systems. 1st edition. BPP, 1990.