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Dyfyniad Arddull ChicagoGmbh, Mahle. Valve Train: Systems and Components. Stuttgart: Springer Vieweg, 2013.
Dyfyniad MLAGmbh, Mahle. Valve Train: Systems and Components. Springer Vieweg, 2013.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.