Neuman, L. (2006). Social Reserch Metods. Univercity of wisconsin at whitewater.
Lua i Stíl Chicago (17ú heag.)Neuman, Lawrence. Social Reserch Metods. Univercity of wisconsin at whitewater, 2006.
Lua MLA (9ú heag.)Neuman, Lawrence. Social Reserch Metods. Univercity of wisconsin at whitewater, 2006.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.