Kothari, C. (1992). An introduction to operational research (3rded.). Vikas.
Chicago Style (17th ed.) ZitazioaKothari, C.R. An Introduction to Operational Research. 3rded. New Delhi: Vikas, 1992.
MLA (9th ed.) ZitazioaKothari, C.R. An Introduction to Operational Research. 3rded. Vikas, 1992.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.