Training in Technology. (2003). Direct Current Technology (Tái bản lần thứ 2.). Germany: System Technik.
শিকাগো স্টাইলে সাইটেশনTraining in Technology. Direct Current Technology. Tái bản lần thứ 2. Germany: System Technik, 2003.
এমএলএ সাইটেশনTraining in Technology. Direct Current Technology. Tái bản lần thứ 2. Germany: System Technik, 2003.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.