APA (7e ed.) Bronvermelding

Não informado. (1921). Contribution from the Institute of Geology and Paleontology. Tohoku University.

Chicago (17e ed.) Bronvermelding

Não informado. Contribution from the Institute of Geology and Paleontology. Sendai, Japão: Tohoku University, 1921.

MLA (8e ed.) Bronvermelding

Não informado. Contribution from the Institute of Geology and Paleontology. Tohoku University, 1921.

Let op: Deze citaties zijn niet altijd 100% accuraat.