Cita APA (7th ed.)

Ecker, J. G. (1988). Introduction to operations research. John Wiley & Sons.

Cita Chicago (17th ed.)

Ecker, Joseph G. Introduction to Operations Research. New York: John Wiley & Sons, 1988.

Cita MLA (9th ed.)

Ecker, Joseph G. Introduction to Operations Research. John Wiley & Sons, 1988.