.Hillier, F. S., & .Lieberman, G. J. (2010). Introduction to operations research (9th ed.). McGraw-Hill Higher Education.
Cita Chicago (17th ed.).Hillier, Frederick S., i Gerald J. .Lieberman. Introduction to Operations Research. 9th ed. New York: McGraw-Hill Higher Education, 2010.
Cita MLA (9th ed.).Hillier, Frederick S., i Gerald J. .Lieberman. Introduction to Operations Research. 9th ed. McGraw-Hill Higher Education, 2010.