Dyfyniad APA

South African Committee for Stratigraphy. (1989). Chronostratigraphic series. Republic of South Africa, Dept. of Mineral and Energy Affairs, Geological Survey.

Dyfyniad Arddull Chicago

South African Committee for Stratigraphy. Chronostratigraphic Series. Pretoria: Republic of South Africa, Dept. of Mineral and Energy Affairs, Geological Survey, 1989.

Dyfyniad MLA

South African Committee for Stratigraphy. Chronostratigraphic Series. Republic of South Africa, Dept. of Mineral and Energy Affairs, Geological Survey, 1989.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.