Zimmermann, K. F., Bonin, H., Fahr, R., & Hinte, H. (2007). Immigration policy and the labor market: The German experience and lessons for Europe. Springer-Verlag Berlin Heidelberg.
Lua i Stíl Chicago (17ú heag.)Zimmermann, Klaus F., Holger Bonin, Rene Fahr, agus Holger Hinte. Immigration Policy and the Labor Market: The German Experience and Lessons for Europe. Berlin, Heidelberg: Springer-Verlag Berlin Heidelberg, 2007.
Lua MLA (8ú heag.)Zimmermann, Klaus F., et al. Immigration Policy and the Labor Market: The German Experience and Lessons for Europe. Springer-Verlag Berlin Heidelberg, 2007.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.