Gardner, J., & Antonucci, E. (1989). Grendel (Vintage Books edition.). Auwsf (023063-6).
Lua i Stíl Chicago (17ú heag.)Gardner, John, agus Emil Antonucci. Grendel. Vintage Books edition. New York: Auwsf (023063-6), 1989.
Lua MLA (9ú heag.)Gardner, John, agus Emil Antonucci. Grendel. Vintage Books edition. Auwsf (023063-6), 1989.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.