Matthiessen, F. O. Hopkins and Whitman: F. O. Matthiessen. Hopkins : a collection of critical essays.(1966).
Lua i Stíl Chicago (17ú heag.)Matthiessen, F. O. "Hopkins and Whitman: F. O. Matthiessen." Hopkins : A Collection of Critical Essays.(1966) .
Lua MLA (8ú heag.)Matthiessen, F. O. "Hopkins and Whitman: F. O. Matthiessen." Hopkins : A Collection of Critical Essays.(1966), .
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.