APA (7th ed.) Citation

Addison, J. T., Schnabel, C., & Wagner, J. (2006). The (parlous) state of german unions. Bonn.

Chicago Style (17th ed.) Citation

Addison, John T., Claus Schnabel, and Joachim Wagner. The (parlous) State of German Unions. Bonn, 2006.

MLA (8th ed.) Citation

Addison, John T., et al. The (parlous) State of German Unions. Bonn, 2006.