Não informado. (1918). Journal of the College of Agriculture. Hokkaido Imperial University.
Chicago-Zitierstil (17. Ausg.)Não informado. Journal of the College of Agriculture. Sapporo, Japão: Hokkaido Imperial University, 1918.
MLA-Zitierstil (8. Ausg.)Não informado. Journal of the College of Agriculture. Hokkaido Imperial University, 1918.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.