Não informado. (1893). Proceedings of the Annual Meeting. Society for the Promotion of Engineering Education.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. Proceedings of the Annual Meeting. Urbana, Ill: Society for the Promotion of Engineering Education, 1893.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. Proceedings of the Annual Meeting. Society for the Promotion of Engineering Education, 1893.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.