Litmanowicz, Władysław & Giżycki, Jerzy (1986, 1987). Szachy od A do Z. Wydawnictwo Sport i Turystyka Warszawa. ISBN 83-217-2481-7 (1. A–M), ISBN 83-217-2745-X (2. N–Z) /wiki/ISBN_(identifier) ↩
"Archived copy". Archived from the original on 2006-04-14. Retrieved 2012-02-19.{{cite web}}: CS1 maint: archived copy as title (link) https://web.archive.org/web/20060414132700/http://www.chessmetrics.com/ ↩
"Home". olimpbase.org. http://www.olimpbase.org/ ↩