APA (7th ed.) Citation

Freytag, A., Güth, W., Koppel, H., & Wangler, L. (2014). Is regulation by milestones efficiency enhancing?: An experimental study of environmental protection. European journal of political economy, 33, . https://doi.org/10.1016/j.ejpoleco.2013.11.005

Chicago Style (17th ed.) Citation

Freytag, Andreas, Werner Güth, Hannes Koppel, and Leo Wangler. "Is Regulation by Milestones Efficiency Enhancing?: An Experimental Study of Environmental Protection." European Journal of Political Economy 33 (2014). https://doi.org/10.1016/j.ejpoleco.2013.11.005.

MLA (9th ed.) Citation

Freytag, Andreas, et al. "Is Regulation by Milestones Efficiency Enhancing?: An Experimental Study of Environmental Protection." European Journal of Political Economy, vol. 33, 2014, https://doi.org/10.1016/j.ejpoleco.2013.11.005.