Welsh J. P. Open Form and Earle Brown's Modules I and II (1967) // Perspectives of New Music. — 1994. — Vol. 32, № 1. — P. 261; 264. — ISSN0031-6016. — JSTOR833173.
nwr-site-liner-notes.s3.amazonaws.com
Ryan D.Earle Brown: A Sketch : Liner notes essay : [арх. 23 сентября 2021] // Earle Brown: Selected Works 1952—1965. — New World Records, 2006.
Welsh J. P. Open Form and Earle Brown's Modules I and II (1967) // Perspectives of New Music. — 1994. — Vol. 32, № 1. — P. 261; 264. — ISSN0031-6016. — JSTOR833173.