Czaika, M. (2017). The gravity of high-skilled migration policies. Springer Verlag.
芝加哥风格引文Czaika, M. The Gravity of High-skilled Migration Policies. Springer Verlag, 2017.
MLA引文Czaika, M. The Gravity of High-skilled Migration Policies. Springer Verlag, 2017.
警告：这些引文格式不一定是100％准确.