International Skating Union.

• 75 years of European and world's championships in speed skating
• Bestimmungen über das Eistanzen, 1. Dezember 1965-30. November 1967
• Handbook for referees and judges, 1988
• Judges' handbook
• The Olympic games results in figure skating, 1908, 1920, 1924-1968, results in speed skating 1924-1968