- ru.ruwiki.ru wiki/Ричард_III
- encyklopedia.narod.ru bios/gov/konigen/england/…
- businka.org Nelvy/2016/10/31/richard-iii-york.html
- en.wikipedia.org Richard of Shrewsbury, Duke of YorkThe Duke of York was sent to the Tower of London, then a royal residence, by King Richard III in mid-1483, where he was held with his brother.
- dic.academic.ru dic.nsf/enc3p/256138