Stern, Dieter. "20 Language contact in the East and Northeast of Europe" Volume 1 The Languages and Linguistics of Europe. Berlin, Boston: DE GRUYTER MOUTON, 2011. 381-392. Web. Retrieved 20 Jun. 2013, from http://www.degruyter.com/view/books/9783110220261/9783110220261.381/9783110220261.381.xml

Stern, D. (2011). 20 Language contact in the East and Northeast of Europe. Volume 1 The Languages and Linguistics of Europe (pp. 381-392). Berlin, Boston: DE GRUYTER MOUTON. Retrieved 20 Jun. 2013, from http://www.degruyter.com/view/books/9783110220261/9783110220261.381/9783110220261.381.xml

Stern, Dieter. 2011. 20 Language contact in the East and Northeast of Europe. In Volume 1 The Languages and Linguistics of Europe, 381-392. Berlin, Boston: DE GRUYTER MOUTON. Retrieved 20 Jun. 2013, from http://www.degruyter.com/view/books/9783110220261/9783110220261.381/9783110220261.381.xml