Gopalakrishna, D. (1999). a study of managerial economics (4th rev.). Himalaya.
Chicago-čujuhus (17. p.)Gopalakrishna, D. A Study of Managerial Economics. 4th rev. Mumbai: Himalaya, 1999.
MLA-čujuhus (9. p.)Gopalakrishna, D. A Study of Managerial Economics. 4th rev. Himalaya, 1999.
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