Cita APA (7th ed.)

Freeman, R. (1997). Managing open systems. Kogan Page in association with the Institute of Educational Technology, Open University.

Cita Chicago (17th ed.)

Freeman, Richard. Managing Open Systems. London: Kogan Page in association with the Institute of Educational Technology, Open University, 1997.

Cita MLA (9th ed.)

Freeman, Richard. Managing Open Systems. Kogan Page in association with the Institute of Educational Technology, Open University, 1997.