Gillin, J. L. (1952). Social problems (4th ed.). Appleton-Century-Crofts.
Lua i Stíl Chicago (17ú heag.)Gillin, John Lewis. Social Problems. 4th ed. New York: Appleton-Century-Crofts, 1952.
Lua MLA (9ú heag.)Gillin, John Lewis. Social Problems. 4th ed. Appleton-Century-Crofts, 1952.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.