Research methods in educational leadership and management
Marianne; Briggs, Ann R.J.: Sage, 2002
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Vockell, Edward L.
Educational research
Macmillan, 1983
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Hammersley, Martyn
Educational research, policymaking and practice
Paul Chapman Publishing, 2002
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Mouly, George J.
The science of educational research
American Book, 1963
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Borg, Walter R.
Educational research: an introduction
David McKay, 1963
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