Lieber, E. (1964). Occupational health: Guide to safe guards against employee sickness and accident. Business.
استشهاد بنمط شيكاغوLieber, E.E. Occupational Health: Guide to Safe Guards Against Employee Sickness and Accident. London: Business, 1964.
MLA استشهادLieber, E.E. Occupational Health: Guide to Safe Guards Against Employee Sickness and Accident. Business, 1964.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.