Greenaway, J. (2012). The differentiation of authority: The medieval turn toward existence. Catholic University of America Press.
Lua i Stíl Chicago (17ú heag.)Greenaway, James. The Differentiation of Authority: The Medieval Turn Toward Existence. Washington, DC: Catholic University of America Press, 2012.
Lua MLA (9ú heag.)Greenaway, James. The Differentiation of Authority: The Medieval Turn Toward Existence. Catholic University of America Press, 2012.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.