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