There are 2 titles associated with this person.

@book{ wphp_1023
  author={de Sismondi,Jean-Charles-Léonard Simonde},
  year={1832},
  title={A History of the Italian Republics. Being a view of the Origin Progress and Fall of Italian Freedom by J.C.L.  De Sismodi. In One Volume.},
  publisher={Longman, Rees, Orme, Brown, and Green \& John Taylor \& },
  address={London},    }
@book{ wphp_928
  author={de Sismondi,Jean-Charles-Léonard Simonde},
  year={1834},
  title={A History of the Fall of the Roman Empire. Comprising a view of the invasion and settlement of the barbarians},
  publisher={Longman, Rees, Orme, Brown, Green and Longman},
  address={London},    }