Setton, k. M., & Winkler, H. R. (1954). Great problems in European civilization. Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)Setton, kenneth M., agus Henry R. Winkler. Great Problems in European Civilization. New York: Prentice-Hall, 1954.
Lua MLA (9ú heag.)Setton, kenneth M., agus Henry R. Winkler. Great Problems in European Civilization. Prentice-Hall, 1954.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.