Baltes, M. M. (1996). The many faces of dependency in old age. Cambridge.
Cita Chicago (17th ed.)Baltes, Margaret M. The Many Faces of Dependency in Old Age. New York: Cambridge, 1996.
Cita MLA (9th ed.)Baltes, Margaret M. The Many Faces of Dependency in Old Age. Cambridge, 1996.
Atenció: Aquestes cites poden no estar 100% correctes.