Bush, D. (1964). John Milton: A sketch of his life and writings. Macmillan.
Lua i Stíl Chicago (17ú heag.)Bush, Douglas. John Milton: A Sketch of His Life and Writings. New York: Macmillan, 1964.
Lua MLA (9ú heag.)Bush, Douglas. John Milton: A Sketch of His Life and Writings. Macmillan, 1964.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.