William Mills "Bill" Irwin (April 11, 1950) jẹ́ òṣèré ará Amẹ́ríkà. Isherwood, Charles (4 March 2013). "Aging Clowns and Brand-New Gags: ‘Old Hats,’ With Bill Irwin and David Shiner". The New York Times. http://theater.nytimes.com/2013/03/05/theater/reviews/old-hats-with-bill-irwin-and-david-shiner.html?pagewanted=all&_r=0. Retrieved 8 April 2013.  Brantley, Ben (8 November 2011). "A Fool, His King and the Madness That Engulfs Them". The New York Times. http://theater.nytimes.com/2011/11/09/theater/reviews/king-lear-at-the-public-theater-review.html. Retrieved 8 April 2013.