Citazione Stile APA (7a Edizione)

Fitzenberger, B., & Kohn, K. (2008). Union Density and Varieties of Coverage: The Anatomy of Union Wage Effects in Germany.

Citazione stile Chigago Style (17a edizione)

Fitzenberger, Bernd, e Karsten Kohn. Union Density and Varieties of Coverage: The Anatomy of Union Wage Effects in Germany. Düsseldorf, 2008.

Citatione MLA (8a ed.)

Fitzenberger, Bernd, e Karsten Kohn. Union Density and Varieties of Coverage: The Anatomy of Union Wage Effects in Germany. 2008.