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Dyfyniad Arddull ChicagoRyan, Chris. Manhattan Prep: Geometry:GMAT Strategy Guide 4. Manhattan: MG Prep Inc, 2014.
Dyfyniad MLARyan, Chris. Manhattan Prep: Geometry:GMAT Strategy Guide 4. MG Prep Inc, 2014.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.