APA (7th ed.) Citation

Forrester, J. W. (1968). Principles of systems: Text and workbook (2nd preliminary ed.). Wright-Allen Press.

Chicago Style (17th ed.) Citation

Forrester, Jay Wright. Principles of Systems: Text and Workbook. 2nd preliminary ed. Cambridge, Mass: Wright-Allen Press, 1968.

MLA (9th ed.) Citation

Forrester, Jay Wright. Principles of Systems: Text and Workbook. 2nd preliminary ed. Wright-Allen Press, 1968.