Author's Philosophical analysis, 1956.

The Concise encyclopedia of western philosophy and philosophers, 1991, c1989: t.p. (J.O. Urmson) Brit. CIP (Urmson, J. O. (James Opie)) cover p. 4 (emeritus fellow of Corpus Christi Coll., Oxford)

Arisutoteresu Rinrigaku nyūmon, 2004: t.p. (J.O. Āmuson [initials in rom.; surname in kana])

Telegraph WWW site, Apr. 10, 2012 (Professor James Urmson; b. James Opie Urmson, Mar. 4, 1915, Yorkshire; d. Jan. 29, 2012; moral philosopher who subjected the religious concept of "going beyond the call of duty" to the cold light of secular examination)

Information from 678 field, converted June 10, 2015 (M.A.)