Vogel, B., & Johnson, S. B. (1992). Alf: A novel / by Bruno Vogel. Translated by Samuel B. Johnson. GMP.
Lua i Stíl Chicago (17ú heag.)Vogel, Bruno, agus Samuel B. Johnson. Alf: A Novel / by Bruno Vogel. Translated by Samuel B. Johnson. London [u.a.]: GMP, 1992.
Lua MLA (8ú heag.)Vogel, Bruno, agus Samuel B. Johnson. Alf: A Novel / by Bruno Vogel. Translated by Samuel B. Johnson. GMP, 1992.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.