@article{article, title = {{The Union Membership Wage-Premium Puzzle: Is There a Free Rider Problem?}}, publisher = {{SAGE Publications}}, url = {{}}, year = {{2004}}, month = {{4}}, author = {{Booth AL and Bryan ML}}, doi = {{10.1177/001979390405700305}}, volume = {{57}}, journal = {{ILR Review}}, issue = {{3}}, pages = {{402-421}}, note = {{Accessed on 2025/05/30}}}