Pond, E. (1993). Beyond the wall: Germany's road to unification. Brookings Institution.
芝加哥风格引文Pond, Elizabeth. Beyond the Wall: Germany's Road to Unification. Washington, DC: Brookings Institution, 1993.
MLA引文Pond, Elizabeth. Beyond the Wall: Germany's Road to Unification. Brookings Institution, 1993.
警告：这些引文格式不一定是100％准确.