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            1
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            2Time-on-task and pupil achievement in science effects of instructional leadershipপ্রকাশিত 2002গবেষণাপত্র
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            3
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            4
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            5
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            6Mastery motivation in early childhood development, measurement, and social processesপ্রকাশিত 1993গ্রন্থ
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            7
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            8
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            9
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            10Operational teacher training objectives and raising achievement levels a monograph.প্রকাশিত 1986গ্রন্থ


