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Dyfyniad Arddull ChicagoBerrangé, Jevan P. The Osa Group: An Auriferous Pliocene Sedimentary Unit From the Osa Peninsula, Southern Costa Rica. 2011.
Dyfyniad MLABerrangé, Jevan P. The Osa Group: An Auriferous Pliocene Sedimentary Unit From the Osa Peninsula, Southern Costa Rica. 2011.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.