Lua APA (7ú heag.)
De, B. (2007). Business economics and business environment (3rd ed.). Tee Dee pub.
Lua i Stíl Chicago (17ú heag.)
De, Bipul. Business Economics and Business Environment. 3rd ed. Kolkata: Tee Dee pub, 2007.
Lua MLA (9ú heag.)
De, Bipul. Business Economics and Business Environment. 3rd ed. Tee Dee pub, 2007.
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