1. Ajzen, L., & Fishbein, M. (1980). Understanding attitudes and predicting social behavior. Englewood Cliffs: Prentice Hall.
2. Alba, R., & Chamlin, M. B. (1983). A preliminary examination of ethnic identification among whites. American Sociological Review, 48, 240–247.
3. Beijer, G. (1969). Modern patterns of international migratory movements. In J. A. Jackson (Ed.), Migration (pp. 11–59). New York: Cambridge University Press.
4. Bogue, D. (1961). Techniques and hypotheses for the study of differential migration. International Population Conference 1961: Paper 114.
5. Bogue, D. (1969). Principles of demography. New York: Wiley and Sons.