Lua APA (7ú heag.)
ebrary, Inc, & Hoffmann, T. (2008). Weakness of will from Plato to the present. Catholic University of America Press.
Lua i Stíl Chicago (17ú heag.)
ebrary, Inc, agus Tobias Hoffmann. Weakness of Will from Plato to the Present. Washington, D.C.: Catholic University of America Press, 2008.
Lua MLA (9ú heag.)
ebrary, Inc, agus Tobias Hoffmann. Weakness of Will from Plato to the Present. Catholic University of America Press, 2008.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.