1. Bengtson, V. L., e Oyama, P. S. (2007). Intergenerational solidarity: Strengthening economic and social ties. Em Expert Groop Meeting, New York, NY, 23-25 october 2007. New York, NY: United Nations. Obtido de: http://www.riicotec.org/InterPresent2/groups/imserso/documents/binario/0c04bengtsonyoyama.pdf
2. Bengtson, V. L., e Roberts, R. E. (1991). Intergenerational solidarity in aging families: An example of formal theory construction. Journal of Marriage and the Family, 53(4), 856-879. DOI: https://doi.org/10.2307/352993
3. Cordero-Torrón, J., Freire-Esparís, M.-P., Pis-Sánchez, E., e Rodríguez-Galdo, M.-X. (2014). Un estudio de la aportación de las personas mayores al bien-estar. España 2009-2010. Regional and Sectorial Economic Studies, 14(1), 159-181. Obtido de: https://www.usc.gal/economet/reviews/eers14112.pdf
4. Durán, M. A. (2018). La riqueza invisible del cuidado. València: Universitat de València.
5. European Foundation for the Improvement of Living and Working Conditions. (2018). European quality of life survey integrated data file, 2003-2016. 3rd Edition. Loughlinstown, Dublin, Ireland: European Foundation for the Improvement of Living and Working Conditions. DOI: http://doi.org/10.5255/UKDA-SN-7348-3