Não informado. Forthcoming International Scientific and Technical Conferences. Department of Education and Science.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. Forthcoming International Scientific and Technical Conferences. London: Department of Education and Science.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. Forthcoming International Scientific and Technical Conferences. Department of Education and Science.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.