Witt, J. (2011). SOC (2nd ed., 2011 ed.). McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Witt, Jon. SOC. 2nd ed., 2011 ed. New York: McGraw-Hill, 2011.
Lua MLA (9ú heag.)Witt, Jon. SOC. 2nd ed., 2011 ed. McGraw-Hill, 2011.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.