Cita APA (7th ed.)

University of Michigan. School of Social Work, Griffin, K. M., & Hull, R. H. (1989). Communication disorders in aging. Sage.

Cita Chicago (17th ed.)

University of Michigan. School of Social Work, Kathleen M. Griffin, i Raymond H. Hull. Communication Disorders in Aging. Newbury Park, Calif: Sage, 1989.

Cita MLA (9th ed.)

University of Michigan. School of Social Work, et al. Communication Disorders in Aging. Sage, 1989.