International Labour Office. (1979). Vocational training and retraining of railwaymen. Geneva: International Labour Office.
শিকাগো স্টাইলে সাইটেশনInternational Labour Office. Vocational Training and Retraining of Railwaymen. Geneva: International Labour Office, 1979.
এমএলএ সাইটেশনInternational Labour Office. Vocational Training and Retraining of Railwaymen. Geneva: International Labour Office, 1979.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.