Gupta, C. (2009). Management (14th ed.). Sultan Chand and Company.
Lua i Stíl Chicago (17ú heag.)Gupta, C.B. Management. 14th ed. New Delhi: Sultan Chand and Company, 2009.
Lua MLA (9ú heag.)Gupta, C.B. Management. 14th ed. Sultan Chand and Company, 2009.
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