Arenas, D. J. (2014). Ciphering the Unnamable through the Letter: Horror in the Poetry of Paul Celan. Universidad Nacional de Colombia.
Lua i Stíl Chicago (17ú heag.)Arenas, David Jiménez. Ciphering the Unnamable Through the Letter: Horror in the Poetry of Paul Celan. Universidad Nacional de Colombia, 2014.
Lua MLA (9ú heag.)Arenas, David Jiménez. Ciphering the Unnamable Through the Letter: Horror in the Poetry of Paul Celan. Universidad Nacional de Colombia, 2014.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.