Grove music online, Nov. 3, 2008 (Mackerras, Sir (Alan) Charles (MacLaurin); b. Nov. 17, 1925, Schenectady, NY; Australian conductor)
Guardian WWW site, July 15, 2010 (Sir Charles Mackerras; b. 1925 in New York to Australian parents; has died in London, aged 84; Australian conductor known as an authority on Czech music and Mozart)
New York times WWW site, July 16, 2010 (in obituary published July 15: Charles Mackerras; Alan Charles MacLaurin Mackerras; b. Nov. 17, 1925, Schenectady, N.Y., to Australian parents; d. Wednesday [July 14, 2010], London, aged 84; Australian conductor)