Bell, L. (1989). Management skills in primary schools. Routledge.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBell, Les. Management Skills in Primary Schools. London: Routledge, 1989.
एमएलए (8वां संस्करण) प्रशस्ति पत्रBell, Les. Management Skills in Primary Schools. Routledge, 1989.
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