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Dyfyniad Arddull ChicagoFenner, Juliane. Diatoms in the Eocene and Oligocene Sediments off NW-Africa: Their Stratigraphic and Paleogeographic Occurrences. 1981.
Dyfyniad MLAFenner, Juliane. Diatoms in the Eocene and Oligocene Sediments off NW-Africa: Their Stratigraphic and Paleogeographic Occurrences. 1981.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.