Schneider, H. W. A history of american philosophy.
Lua i Stíl Chicago (17ú heag.)Schneider, Herbert W. A History of American Philosophy.
Lua MLA (8ú heag.)Schneider, Herbert W. A History of American Philosophy.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.