Não informado. (1912). Science reports of the Tohoku University. Tohoku University, Faculty of Science, Institute of Geology and Paleontology.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Não informado. Science Reports of the Tohoku University. Sendai, Japão: Tohoku University, Faculty of Science, Institute of Geology and Paleontology, 1912.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Não informado. Science Reports of the Tohoku University. Tohoku University, Faculty of Science, Institute of Geology and Paleontology, 1912.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.