Hellriegel, D. (2008). Management: A Competency-Based Approach. Cengage Learning India Private Limited.
Chicago-viite (17. p.)Hellriegel, Don. Management: A Competency-Based Approach. New Delhi: Cengage Learning India Private Limited, 2008.
MLA-viite (9. p.)Hellriegel, Don. Management: A Competency-Based Approach. Cengage Learning India Private Limited, 2008.
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