Cabanis, J. (1971). The joyless years (L'Age ingrat). Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)Cabanis, Jose. The Joyless Years (L'Age Ingrat). Englewood Cliffs, N. J: Prentice-Hall, 1971.
Lua MLA (9ú heag.)Cabanis, Jose. The Joyless Years (L'Age Ingrat). Prentice-Hall, 1971.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.