Não informado. (1922). Commentationes physico-mathematicae. Finnish Society of Sciences and Letters.
Chicago (17e ed.) BronvermeldingNão informado. Commentationes Physico-mathematicae. Helsinki: Finnish Society of Sciences and Letters, 1922.
MLA (8e ed.) BronvermeldingNão informado. Commentationes Physico-mathematicae. Finnish Society of Sciences and Letters, 1922.
Let op: Deze citaties zijn niet altijd 100% accuraat.