Hutchins, R. M. On the natural faculties.
Lua i Stíl Chicago (17ú heag.)Hutchins, Robert Maynard. On the Natural Faculties.
Lua MLA (8ú heag.)Hutchins, Robert Maynard. On the Natural Faculties.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.