Froland, C. (1981). Helping networks and human services. Sage.
Lua i Stíl Chicago (17ú heag.)Froland, Charles. Helping Networks and Human Services. Beverley Hills: Sage, 1981.
Lua MLA (9ú heag.)Froland, Charles. Helping Networks and Human Services. Sage, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.