Não informado. (1968). Bulletin of the Geological Society of Finland. Geological Society of Finland.
Style de citation Chicago (17e éd.)Não informado. Bulletin of the Geological Society of Finland. Helsinki: Geological Society of Finland, 1968.
Style de citation MLA (8e éd.)Não informado. Bulletin of the Geological Society of Finland. Geological Society of Finland, 1968.
Attention : ces citations peuvent ne pas être correctes à 100%.