Dyfyniad APA

Groenesteijn, K. (1997). Formation of surface coatings on volcanic ejecta at four volcanoes in Costa Rica.

Dyfyniad Arddull Chicago

Groenesteijn, K. Formation of Surface Coatings On Volcanic Ejecta At Four Volcanoes in Costa Rica. 1997.

Dyfyniad MLA

Groenesteijn, K. Formation of Surface Coatings On Volcanic Ejecta At Four Volcanoes in Costa Rica. 1997.

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