Irwin, G. Dr. Johnson's troubled mind: George Irwin. Samuel Johnson : a collection of critical essays.(1965).
Lua i Stíl Chicago (17ú heag.)Irwin, George. "Dr. Johnson's Troubled Mind: George Irwin." Samuel Johnson : A Collection of Critical Essays.(1965) .
Lua MLA (8ú heag.)Irwin, George. "Dr. Johnson's Troubled Mind: George Irwin." Samuel Johnson : A Collection of Critical Essays.(1965), .
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.