Murray H.J.R. (1913). A history of chess. Benjamin Press (first published by Oxford University Press). ISBN0-936317-01-9. OCLC13472872.
United States Chess Federation. (2003). U.S. Chess Federation's official rules of chess. Just, Tim., Burg, Daniel B. (5th ed.). New York. ISBN0-8129-3559-4. OCLC52859422.{{cite book}}: CS1 maint: location missing publisher (link)