Flagle, C. D., Huggins, W. H., & Roy, R. H. (1960). Operations research and systems engineering. Johns Hopkins Press.
Cita Chicago (17th ed.)Flagle, Charles D., William H. Huggins, i Robert H. Roy. Operations Research and Systems Engineering. Baltimore: Johns Hopkins Press, 1960.
Cita MLA (9th ed.)Flagle, Charles D., et al. Operations Research and Systems Engineering. Johns Hopkins Press, 1960.
Atenció: Aquestes cites poden no estar 100% correctes.