heslop, A., & International, H. (2013). Ageing and Development.
Cita Chicago (17th ed.)heslop, Amanda, i HelpAge International. Ageing and Development. 2013.
Cita MLA (8th ed.)heslop, Amanda, i HelpAge International. Ageing and Development. 2013.
Atenció: Aquestes cites poden no estar 100% correctes.