Omar Khayyam, Edward FitzGerald, Christopher Decker (1997). “Edward FitzGerald, Rubáiyát of Omar Khayyám: A Critical Edition”, p.174, University of Virginia Press
Sukarno's speech at the opening of the Bandung Conference, as quoted in "Selected Documents: Some Aspects Concerning Progress & Principles of the Indonesian Revolution, Book 1" (p. 14), April 18, 1955.