British Psychological Society. Developmental Section. Meeting, International Society for the Study of Behavioural Development. Meeting, European Conference on Developmental Psychology (3rd : 1988 : Budapest, Hungary), & Smith, P. K. (1991). The Psychology of grandparenthood: An international perspective. Routledge.
Cita Chicago (17th ed.)British Psychological Society. Developmental Section. Meeting, International Society for the Study of Behavioural Development. Meeting, Hungary) European Conference on Developmental Psychology (3rd : 1988 : Budapest, i Peter K. Smith. The Psychology of Grandparenthood: An International Perspective. London: Routledge, 1991.
Cita MLA (9th ed.)British Psychological Society. Developmental Section. Meeting, et al. The Psychology of Grandparenthood: An International Perspective. Routledge, 1991.