Cita APA (7th ed.)

Okun, M. A. (1982). Programs for older adults. Jossey-Bass Inc..

Cita Chicago (17th ed.)

Okun, Morris A. Programs for Older Adults. San Francisco: Jossey-Bass Inc., 1982.

Cita MLA (9th ed.)

Okun, Morris A. Programs for Older Adults. Jossey-Bass Inc., 1982.