ebrary, Inc, & Classen, A. (2007). Old age in the Middle Ages and the Renaissance: Interdisciplinary approaches to a neglected topic. Walter de Gruyter.
Lua i Stíl Chicago (17ú heag.)ebrary, Inc, agus Albrecht Classen. Old Age in the Middle Ages and the Renaissance: Interdisciplinary Approaches to a Neglected Topic. Berlin ; New York: Walter de Gruyter, 2007.
Lua MLA (9ú heag.)ebrary, Inc, agus Albrecht Classen. Old Age in the Middle Ages and the Renaissance: Interdisciplinary Approaches to a Neglected Topic. Walter de Gruyter, 2007.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.