Kettley, N. C. (2010). Theory building in educational research. Continuum International Pub. Group.
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Dyfyniad Arddull Chicago
Kettley, Nigel C. Theory Building in Educational Research. New York: Continuum International Pub. Group, 2010.
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Dyfyniad MLA
Kettley, Nigel C. Theory Building in Educational Research. Continuum International Pub. Group, 2010.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.