Teil 1 Länder. Berlin, Boston: De Gruyter, 2011. Web. Retrieved 23 May. 2013, from http://www.degruyter.com/view/product/128646

Teil 1 Länder. (2011). Berlin, Boston: De Gruyter. Retrieved 23 May. 2013, from http://www.degruyter.com/view/product/128646

Teil 1 Länder. 2011. Berlin, Boston: De Gruyter. Retrieved 23 May. 2013, from http://www.degruyter.com/view/product/128646