International Labour Office. (1975). Working environment: Sixth item on the agenda. Geneva: International Labour Office.
استشهاد بنمط شيكاغوInternational Labour Office. Working Environment: Sixth Item On the Agenda. Geneva: International Labour Office, 1975.
MLA استشهادInternational Labour Office. Working Environment: Sixth Item On the Agenda. Geneva: International Labour Office, 1975.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.