Ackoff, R. L. (1968). Fundamentals Of Operation Research R.l. Ackoff And M.w Sasieni. John Wiley & Sons.
Lua i Stíl Chicago (17ú heag.)Ackoff, Russel L. Fundamentals Of Operation Research R.l. Ackoff And M.w Sasieni. John Wiley & Sons, 1968.
Lua MLA (8ú heag.)Ackoff, Russel L. Fundamentals Of Operation Research R.l. Ackoff And M.w Sasieni. John Wiley & Sons, 1968.
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