Retrieved 2011-01-19. ↑ Erste deutsche Beratungs- und Informationsstelle für Linkshänder und umge-schulte Linkshänder. lefthander-consulting.org. Retrieved 21 September 2013 ↑ Handedness Research Institute | Teaching Left-Handers to Write. handedness.org. Retrieved 21 September 2013 1 2 3 4 Left-Handers' Day August 13th: Celebrate your right to be left-handed. lefthandersday.com.