ebrary, Inc, & Classen, A. (2007). Old age in the Middle Ages and the Renaissance: Interdisciplinary approaches to a neglected topic. Walter de Gruyter.
Čikaški stil citiranja (17. izdanje)ebrary, Inc, i Albrecht Classen. Old Age in the Middle Ages and the Renaissance: Interdisciplinary Approaches to a Neglected Topic. Berlin ; New York: Walter de Gruyter, 2007.
MLA način citiranja (9. izdanje)ebrary, Inc, i Albrecht Classen. Old Age in the Middle Ages and the Renaissance: Interdisciplinary Approaches to a Neglected Topic. Walter de Gruyter, 2007.
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