Ceder, B., & Quashem, M. A. (1998). Study on group sustainability. BRDB Institutional Support Project.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCeder, Bjorn, और M. A. Quashem. Study on Group Sustainability. Dhaka: BRDB Institutional Support Project, 1998.
एमएलए (8वां संस्करण) प्रशस्ति पत्रCeder, Bjorn, और M. A. Quashem. Study on Group Sustainability. BRDB Institutional Support Project, 1998.
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