1. Child, D. (2006). The essentials of factor analysis (2nd ed.). London: Continuum International Publishing Group.
2. Cox, J. L. (ed.). (2018). Transcultural psychiatry. London: Rotledge.
3. Doi, T. (1981). The anatomy of dependence. Tokyo: Kodansha International.
4. Eckensberger, L. (1992). Agency, action and culture: three basic concepts for psychology in general, and for cross-cultural psychology in specific. Proceedings of the IACCP-Conference, Catmandu, 1992. Lisse: Swets & Zeitlinger.
5. Edwards, A. L. (1971). Versuchsplanung in der psychologischen Forschung. Weinheim: Beltz.