Yandell, K. E. (1990). Hume's 'inexplicable mystery': His views on religion. Temple University Press.
Lua i Stíl Chicago (17ú heag.)Yandell, Keith E. Hume's 'Inexplicable Mystery': His Views on Religion. Philadelphia: Temple University Press, 1990.
Lua MLA (9ú heag.)Yandell, Keith E. Hume's 'Inexplicable Mystery': His Views on Religion. Temple University Press, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.