Não informado. Swiss technics. Swiss Association of Machinery Manufacturers, Swiss Office for the Development of Trade.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. Swiss Technics. Lausanne, Suíça: Swiss Association of Machinery Manufacturers, Swiss Office for the Development of Trade.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. Swiss Technics. Swiss Association of Machinery Manufacturers, Swiss Office for the Development of Trade.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.