Tohutoro APA (7th ed.)
De, B. (2007). Business economics and business environment (3rd ed.). Tee Dee pub.
Tohutoru Kātū Chicago (17th ed.)
De, Bipul. Business Economics and Business Environment. 3rd ed. Kolkata: Tee Dee pub, 2007.
Tohutoro MLA (9th ed.)
De, Bipul. Business Economics and Business Environment. 3rd ed. Tee Dee pub, 2007.
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