APA (7e ed.) Bronvermelding

Goldratt, E. M., Schragenheim, E., & Ptak, C. A. (2000). Necessary but not Sufficient: A Theory of Constraints Business Novel. North River Press.

Chicago (17e ed.) Bronvermelding

Goldratt, Eliyahu M., Eli Schragenheim, en Carol A. Ptak. Necessary but Not Sufficient: A Theory of Constraints Business Novel. Great Barrington, MA: North River Press, 2000.

MLA (9e ed.) Bronvermelding

Goldratt, Eliyahu M., et al. Necessary but Not Sufficient: A Theory of Constraints Business Novel. North River Press, 2000.