Goldratt, E. M., Schragenheim, E., & Ptak, C. A. (2000). Necessary but not Sufficient: A Theory of Constraints Business Novel. North River Press.
Cita Chicago (17th ed.)Goldratt, Eliyahu M., Eli Schragenheim, i Carol A. Ptak. Necessary but Not Sufficient: A Theory of Constraints Business Novel. Great Barrington, MA: North River Press, 2000.
Cita MLA (9th ed.)Goldratt, Eliyahu M., et al. Necessary but Not Sufficient: A Theory of Constraints Business Novel. North River Press, 2000.
Atenció: Aquestes cites poden no estar 100% correctes.