WHO. (1995). Epidemiology and preventation of cardivascular diseases in elderly people. Geneva.
استشهاد بنمط شيكاغوWHO. Epidemiology and Preventation of Cardivascular Diseases in Elderly People. Geneva, 1995.
MLA استشهادWHO. Epidemiology and Preventation of Cardivascular Diseases in Elderly People. Geneva, 1995.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.