Não informado. (1969). Current Papers in Electrical and Electronics Engineering. Institution of Electrical Engineers.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. Current Papers in Electrical and Electronics Engineering. London: Institution of Electrical Engineers, 1969.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. Current Papers in Electrical and Electronics Engineering. Institution of Electrical Engineers, 1969.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.