MacGowan, C. J. (2004). Twentieth-century American poetry. Blackwell Pub. ; Atlantic Publishers and distributors.
Lua i Stíl Chicago (17ú heag.)MacGowan, Christopher J. Twentieth-century American Poetry. Maldon, MA : New Delhi: Blackwell Pub. ; Atlantic Publishers and distributors, 2004.
Lua MLA (8ú heag.)MacGowan, Christopher J. Twentieth-century American Poetry. Blackwell Pub. ; Atlantic Publishers and distributors, 2004.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.