Czaika, M. (2017). The gravity of high-skilled migration policies. Springer Verlag.
Cita Chicago (17th ed.)Czaika, M. The Gravity of High-skilled Migration Policies. Springer Verlag, 2017.
Cita MLA (9th ed.)Czaika, M. The Gravity of High-skilled Migration Policies. Springer Verlag, 2017.
Atenció: Aquestes cites poden no estar 100% correctes.