Fitzenberger, B., & Kohn, K. (2008). Union Density and Varieties of Coverage: The Anatomy of Union Wage Effects in Germany.
Chicago-Zitierstil (17. Ausg.)Fitzenberger, Bernd, 与 Karsten Kohn. Union Density and Varieties of Coverage: The Anatomy of Union Wage Effects in Germany. Düsseldorf, 2008.
MLA-Zitierstil (8. Ausg.)Fitzenberger, Bernd, 与 Karsten Kohn. Union Density and Varieties of Coverage: The Anatomy of Union Wage Effects in Germany. 2008.
警告：这些引文格式不一定是100％准确.