APA aipamena

Norman, J. M., & Ritchie, E. Problem solving exercises in operational research. Vol.1. Lancord.

Chicago Style aipamena

Norman, J. M., and Eric Ritchie. Problem Solving Exercises in Operational Research. Vol.1. Lancaster: Lancord.

MLA aipamena

Norman, J. M., and Eric Ritchie. Problem Solving Exercises in Operational Research. Vol.1. Lancord.

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