"Kr." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. 15 Nov. 2009 <http://www.encyclopedia.com>.
"Kr." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. (November 15, 2009). http://www.encyclopedia.com/doc/1O999-kr005.html
"Kr." The Oxford Pocket Dictionary of Current English. 2009. Retrieved November 15, 2009 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O999-kr005.html