Style de citation APA (7e éd.)

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

Style de citation Chicago (17e éd.)

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

Style de citation MLA (9e éd.)

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