Crisafulli, A. S. Helmut A. Hatzfeld: Alessandro S. Crisafulli. Linguistic and literary studies : in honor of Helmut A. Hatzfeld.(1964).
Lua i Stíl Chicago (17ú heag.)Crisafulli, Alessandro S. "Helmut A. Hatzfeld: Alessandro S. Crisafulli." Linguistic and Literary Studies : In Honor of Helmut A. Hatzfeld.(1964) .
Lua MLA (8ú heag.)Crisafulli, Alessandro S. "Helmut A. Hatzfeld: Alessandro S. Crisafulli." Linguistic and Literary Studies : In Honor of Helmut A. Hatzfeld.(1964), .
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.