H. Ganzenboom, und D. Treiman. Kapitel Three internationall standardized measures for comparative research on occupational status, Seite 159-193. Kluwer Academic Press, (2003)
A. Voit, S. Mayer, V. Schwind, und N. Henze. Proceedings of the 2019 CHI Conference on Human Factors in Computing Systems, Seite 507:1--507:12. New York, NY, USA, ACM, (2019)