APA

Spies, . (2018). Immigration and Welfare State Retrenchment. : OUPOxford University Press.

Chicago

Spies, . 2018. Immigration and Welfare State Retrenchment. : OUPOxford University Press.

Harvard

Spies, . (2018). Immigration and Welfare State Retrenchment. : OUPOxford University Press.

MLA

Spies, . Immigration and Welfare State Retrenchment. : OUPOxford University Press. 2018.