Copleston, F. C., & Copleston, F. C. (1976). Hobbes to Hume. Search press [u.a.].
Lua i Stíl Chicago (17ú heag.)Copleston, Frederick C., agus Frederick C. Copleston. Hobbes to Hume. London [u.a.]: Search press [u.a.], 1976.
Lua MLA (8ú heag.)Copleston, Frederick C., agus Frederick C. Copleston. Hobbes to Hume. Search press [u.a.], 1976.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.