Omar Khayyam, Edward FitzGerald (1912). “Rubáiyát: English, French, German, Italian, and Dutch translations comparatively arranged in accordance with the text of Edward Fitzgerald's version, with further selections, notes, biographies, bibliographies, and other material”
Oscar Wilde, Russell Jackson, Joseph Bristow, Ian Small (2000). “The Complete Works of Oscar Wilde: The picture of Dorian Gray : the 1890 and 1891 texts”, p.175, Oxford University Press on Demand