Dyfyniad APA

Virkkala, K. (1951). Glacial geology of the Suomussalmi area, East Finland. Government Press.

Dyfyniad Arddull Chicago

Virkkala, Kalevi. Glacial Geology of the Suomussalmi Area, East Finland. Helsinki: Government Press, 1951.

Dyfyniad MLA

Virkkala, Kalevi. Glacial Geology of the Suomussalmi Area, East Finland. Government Press, 1951.

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