Cita APA (7a ed.)

USA, Department of Health, Education, and Welfare, & USA Department of Health, E. (1977). Providing human services to the elderly. Dept. of Health, Education and Welfare.

Cita Chicago Style (17a ed.)

USA, Department of Health, Education, and Welfare, y Education USA Department of Health. Providing Human Services to the Elderly. Washington, D.C: Dept. of Health, Education and Welfare, 1977.

Cita MLA (8a ed.)

USA, Department of Health, Education, and Welfare, y Education USA Department of Health. Providing Human Services to the Elderly. Dept. of Health, Education and Welfare, 1977.