USA. (1977). Providing human services to the elderly. Dept. of Health, Education and Welfare.
Chicago-Zitierstil (17. Ausg.)USA. Providing Human Services to the Elderly. Washington, D.C: Dept. of Health, Education and Welfare, 1977.
MLA-Zitierstil (9. Ausg.)USA. Providing Human Services to the Elderly. Dept. of Health, Education and Welfare, 1977.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.
