Nitsch, V. (2002). Border Effects and Border Regions: Lessons from the German Unification.
Chicago-Zitierstil (17. Ausg.)Nitsch, Volker. Border Effects and Border Regions: Lessons from the German Unification. Hamburg, 2002.
MLA-Zitierstil (8. Ausg.)Nitsch, Volker. Border Effects and Border Regions: Lessons from the German Unification. 2002.
警告：這些引文格式不一定是100％准確.