http://es.wikipedia.org/wiki/John_Tomlinson_(bass)

International who's who in classical music, 2007---Tomlinson, sir John Rowland; british singer (bass); b. 22 sept. 1946 Accrington, Lancs.)

LC auth., 23-8-2011---(Tomlinson, John, 1946 Sept. 22-; operatic bass)

I Capuleti e i Montecchi, cop. 2010---carátula del CD (John Tomlinson)