Koopmann, G. (2001). Competition Regimes in Telecommunications and the International Trading System.
Chicago-Zitierstil (17. Ausg.)Koopmann, Georg. Competition Regimes in Telecommunications and the International Trading System. Hamburg, 2001.
MLA-Zitierstil (8. Ausg.)Koopmann, Georg. Competition Regimes in Telecommunications and the International Trading System. 2001.
警告：這些引文格式不一定是100％准確.