Elton, O. (1966). Michael Drayton: A critical study. Russell & Russell.
Lua i Stíl Chicago (17ú heag.)Elton, Oliver. Michael Drayton: A Critical Study. New York: Russell & Russell, 1966.
Lua MLA (8ú heag.)Elton, Oliver. Michael Drayton: A Critical Study. Russell & Russell, 1966.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.