Cita APA (7a ed.)

Hugo, I. (1993). Practical open systems: A guide for managers (2nd ed.). NCC Blackwell.

Cita Chicago Style (17a ed.)

Hugo, Ian. Practical Open Systems: A Guide for Managers. 2nd ed. Manchester, [etc.]: NCC Blackwell, 1993.

Cita MLA (9a ed.)

Hugo, Ian. Practical Open Systems: A Guide for Managers. 2nd ed. NCC Blackwell, 1993.