Kuper, A., & Kuper, J. (2009). The social science encyclopedia (3rd ed.). Routledge.
Lua i Stíl Chicago (17ú heag.)Kuper, Adam, agus Jessica Kuper. The Social Science Encyclopedia. 3rd ed. London ; New York: Routledge, 2009.
Lua MLA (8ú heag.)Kuper, Adam, agus Jessica Kuper. The Social Science Encyclopedia. 3rd ed. Routledge, 2009.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.