Não informado. (1961). Journal of the Mining College, Akita University. Akita Daigaku Kozangakubu.
Chicago (17e ed.) BronvermeldingNão informado. Journal of the Mining College, Akita University. Akita, Japão: Akita Daigaku Kozangakubu, 1961.
MLA (8e ed.) BronvermeldingNão informado. Journal of the Mining College, Akita University. Akita Daigaku Kozangakubu, 1961.
Let op: Deze citaties zijn niet altijd 100% accuraat.