T. F. HOAD. "igloo." The Concise Oxford Dictionary of English Etymology. 1996. Encyclopedia.com. 9 Jul. 2009 <http://www.encyclopedia.com>.
T. F. HOAD. "igloo." The Concise Oxford Dictionary of English Etymology. 1996. Encyclopedia.com. (July 9, 2009). http://www.encyclopedia.com/doc/1O27-igloo.html
T. F. HOAD. "igloo." The Concise Oxford Dictionary of English Etymology. 1996. Retrieved July 09, 2009 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O27-igloo.html