Ham Chande, R. 1982. Dooghe, G. y Helander, J. (editores). Family Life in Old Age. Netherlands Interuniversity Demographic Institute : y Population and Family Study Center, 1979. Estudios Demográficos y Urbanos. 16, 04 (oct. 1982), 599–601. DOI:https://doi.org/10.24201/edu.v16i04.528.