Não informado. (1968). Bulletin of the Geological Society of Finland. Geological Society of Finland.
Chicagoスタイル(17版)引用形式Não informado. Bulletin of the Geological Society of Finland. Helsinki: Geological Society of Finland, 1968.
MLA(8版)引用形式Não informado. Bulletin of the Geological Society of Finland. Geological Society of Finland, 1968.
警告: この引用は必ずしも正確ではありません.