Charles, C. M. (1995). Introduction to educational research (2nd ed.). Longman Publishers USA.
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Dyfyniad Arddull Chicago
Charles, C. M. Introduction to Educational Research. 2nd ed. White Plains, N.Y.: Longman Publishers USA, 1995.
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Dyfyniad MLA
Charles, C. M. Introduction to Educational Research. 2nd ed. Longman Publishers USA, 1995.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.