Kale, N. (2002). Business environment and development -S.Y.B.Com (5th.). Vipul.
Lua i Stíl Chicago (17ú heag.)Kale, N. Business Environment and Development -S.Y.B.Com. 5th. MUmbai: Vipul, 2002.
Lua MLA (9ú heag.)Kale, N. Business Environment and Development -S.Y.B.Com. 5th. Vipul, 2002.
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