International Labour Office. (1977). Safety, health and working environment in the metal trades: New appoaches. Geneve: International Labour Office.
استشهاد بنمط شيكاغوInternational Labour Office. Safety, Health and Working Environment in the Metal Trades: New Appoaches. Geneve: International Labour Office, 1977.
MLA استشهادInternational Labour Office. Safety, Health and Working Environment in the Metal Trades: New Appoaches. Geneve: International Labour Office, 1977.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.