International Labour Office. (1979). Vocational training and retraining of railwaymen. Geneva: International Labour Office.
استشهاد بنمط شيكاغوInternational Labour Office. Vocational Training and Retraining of Railwaymen. Geneva: International Labour Office, 1979.
MLA استشهادInternational Labour Office. Vocational Training and Retraining of Railwaymen. Geneva: International Labour Office, 1979.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.