Dyfyniad APA

Trausti Einarsson. (1946). Origin of the basic tuffs of Iceland. [s. n.].

Dyfyniad Arddull Chicago

Trausti Einarsson. Origin of the Basic Tuffs of Iceland. Reykjavik: [s. n.], 1946.

Dyfyniad MLA

Trausti Einarsson. Origin of the Basic Tuffs of Iceland. [s. n.], 1946.

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