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Dyfyniad Arddull ChicagoHartoonian, H Michael. A Guide to Curriculum Planning in Social Studies. Madison: Wisconsin, 1986.
Dyfyniad MLAHartoonian, H Michael. A Guide to Curriculum Planning in Social Studies. Wisconsin, 1986.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.