Cita APA (7a ed.)

Forrester, J. W. (1990). Principles of systems (1st repr.). Productivity.

Cita Chicago Style (17a ed.)

Forrester, Jay Wright. Principles of Systems. 1st repr. Portland, Oregon: Productivity, 1990.

Cita MLA (9a ed.)

Forrester, Jay Wright. Principles of Systems. 1st repr. Productivity, 1990.