国际知识产权联盟（IIPA）：2013年美国版权产业经济贡献研究报告（英文版）

This report, Copyright Industries in the U.S. Economy: The 2013 Report, demonstrates that the core copyright industries of the United States – those industries whose primary purpose is to create, produce, distribute or exhibit copyright materials, and which include computer software, videogames, books, newspapers, periodicals and journals, motion pictures, recorded music, and radio and television broadcasting – provide significant value added to GDP; an increasing number of high-paying jobs;