Sumner, M. (2012). Enterprise Resource Planning. Pearson Education India Pvt. Ltd.
Chicago-čujuhus (17. p.)Sumner, Mary. Enterprise Resource Planning. New Delhi: Pearson Education India Pvt. Ltd, 2012.
MLA-čujuhus (9. p.)Sumner, Mary. Enterprise Resource Planning. Pearson Education India Pvt. Ltd, 2012.
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