*[<ref> {{Cita web|url=https://concertopera.org/|titolo=Washington Concert Opera {{!}}- Opera Company in DC|sito=Washington Concert Opera|lingua=en-US|accesso=2022-05-14}}</ref> Washington Concert Opera's website]
*[<ref> {{Cita web|url=https://web.archive.org/web/20140427010854/http://www.kennedy-center.org/programs/festivals/06-07/shakespeare/|titolo=Kennedy Center Festivals: Shakespeare in Washington, Jan.-Jun., 2007|sito=web.archive.org|data=2014-04-27|accesso=2022-05-14|lingua=en}}</ref> Kennedy Center: Shakespeare in Washington Festival]
