(1977). Social security in 10 industrial nations. Switzerland: Union bank of Switzerland.
استشهاد بنمط شيكاغوSocial Security in 10 Industrial Nations. Switzerland: Union bank of Switzerland, 1977.
MLA استشهادSocial Security in 10 Industrial Nations. Switzerland: Union bank of Switzerland, 1977.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.