Levitt, T. (1973). The third sector: New tactice for a responsive society. American management association.
শিকাগো স্টাইলে সাইটেশনLevitt, Theodore. The Third Sector: New Tactice for a Responsive Society. New York: American management association, 1973.
এমএলএ সাইটেশনLevitt, Theodore. The Third Sector: New Tactice for a Responsive Society. American management association, 1973.
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