Close, Avrille. (1992). Flexible learning for balanced science: Resources for initial teacher training and inset. H.M.S.O.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रClose, Avrille. Flexible Learning for Balanced Science: Resources for Initial Teacher Training and Inset. London: H.M.S.O, 1992.
एमएलए (9वां संस्करण) प्रशस्ति पत्रClose, Avrille. Flexible Learning for Balanced Science: Resources for Initial Teacher Training and Inset. H.M.S.O, 1992.
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