1. Bomschier, V. 1986. “Social Stratification in Six Western Countries: The General Pattern and Some Differences.” Social Science Information 25:797–824.
2. De Graaf, P.M., H.B.G. Ganzeboom, and M. Kalmijn. 1989. “Cultural and Economic Dimensions of Occupational Status.” Pp. 53–74 in Similar or Different? Continuities in Dutch Research on Social Stratification and Social Mobility, edited by W. Jansen, J. Dronkers, and K. Verrips. Amsterdam: SISWO.
3. Duncan, O.D. 1961. “A Socio-economic Index for All Occupations and Properties and Characteristics of the Socioeconomic Index.” Pp. 109–161 in Occupations and Social Status, edited by A.J. Reiss, Jr. Glencoe, Il: Free Press.
4. Duncan-Jones, P. 1972. “Social Mobility, Canonical Scoring and Occupational Classification.” Pp. 191–210 in The Analysis of Social Mobility: Methods and Approaches, edited by K. Hope. Oxford: Clarendon Press.
5. Erikson, R., and J.H. Goldthorpe. 1992. The Constant Flux: A Study of Class Mobility in Industrial Societies. Oxford: Clarendon Press.