Dyfyniad APA

FIRTH, C. R. (1999). Volcanoes in the quaternary. Geological Society.

Dyfyniad Arddull Chicago

FIRTH, C. R. Volcanoes in the Quaternary. Geological Society, 1999.

Dyfyniad MLA

FIRTH, C. R. Volcanoes in the Quaternary. Geological Society, 1999.

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