Παραπομπή σε μορφή APA (7η εκδ.)

ebrary, Inc, & Classen, A. (2007). Old age in the Middle Ages and the Renaissance: Interdisciplinary approaches to a neglected topic. Walter de Gruyter.

Παραπομπή σε μορφή Chicago (17η εκδ.)

ebrary, Inc, και Albrecht Classen. Old Age in the Middle Ages and the Renaissance: Interdisciplinary Approaches to a Neglected Topic. Berlin ; New York: Walter de Gruyter, 2007.

Παραπομπή σε μορφή MLA (9th εκδ.)

ebrary, Inc, και Albrecht Classen. Old Age in the Middle Ages and the Renaissance: Interdisciplinary Approaches to a Neglected Topic. Walter de Gruyter, 2007.