Não informado. Reports of the Research Institute for Strength and Fracture of Materials. Tohoku University.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. Reports of the Research Institute for Strength and Fracture of Materials. Sendai, Japão: Tohoku University.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. Reports of the Research Institute for Strength and Fracture of Materials. Tohoku University.
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