Perlman, R., & Gurin, A. (1972). Community organization and social planning. Wiley.
Lua i Stíl Chicago (17ú heag.)Perlman, Robert, agus Arnold Gurin. Community Organization and Social Planning. New York: Wiley, 1972.
Lua MLA (9ú heag.)Perlman, Robert, agus Arnold Gurin. Community Organization and Social Planning. Wiley, 1972.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.