Taubes, J. S. (1944). The duty of mourning: Essay. Superior Printers.
Lua i Stíl Chicago (17ú heag.)Taubes, Jacob Samuel. The Duty of Mourning: Essay. London: Superior Printers, 1944.
Lua MLA (8ú heag.)Taubes, Jacob Samuel. The Duty of Mourning: Essay. Superior Printers, 1944.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.