Dickens, C. (1994). Hard times. Penguin Books.
Lua i Stíl Chicago (17ú heag.)Dickens, Charles. Hard Times. New York, New York: Penguin Books, 1994.
Lua MLA (9ú heag.)Dickens, Charles. Hard Times. Penguin Books, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.