APA (7e ed.) Bronvermelding

Higgins, M., & Williamson, J. G. (1999). Explaining inequality the world round: Cohort size, Kuznets curve, and openness. National Bureau of Economic Research.

Chicago (17e ed.) Bronvermelding

Higgins, Matthew, en Jeffrey G. Williamson. Explaining Inequality the World Round: Cohort Size, Kuznets Curve, and Openness. Cambridge: National Bureau of Economic Research, 1999.

MLA (9e ed.) Bronvermelding

Higgins, Matthew, en Jeffrey G. Williamson. Explaining Inequality the World Round: Cohort Size, Kuznets Curve, and Openness. National Bureau of Economic Research, 1999.