Nigel Slack, L. Operations Strategy 5ed. Pearson.
Chicago-čujuhus (17. p.)Nigel Slack, Lewis. Operations Strategy 5ed. Pearson.
MLA-čujuhus (9. p.)Nigel Slack, Lewis. Operations Strategy 5ed. Pearson.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.