Qualls, S. H., & Zarit, S. H. (2009). Aging families and caregiving. Wiley.
Lua i Stíl Chicago (17ú heag.)Qualls, Sarah Honn, agus Steven H. Zarit. Aging Families and Caregiving. Hoboken, N.J: Wiley, 2009.
Lua MLA (9ú heag.)Qualls, Sarah Honn, agus Steven H. Zarit. Aging Families and Caregiving. Wiley, 2009.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.