Skinner, R. D. (1964). Eugene O'Neill: A poet's quest. Russell & Russell.
Lua i Stíl Chicago (17ú heag.)Skinner, Richard Dana. Eugene O'Neill: A Poet's Quest. New York: Russell & Russell, 1964.
Lua MLA (9ú heag.)Skinner, Richard Dana. Eugene O'Neill: A Poet's Quest. Russell & Russell, 1964.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.