APA (7th ed.) Citation

Orwell, G. (2010). Down and out in Paris and London. A Harvest Book. Harcourt, Inc.

Chicago Style (17th ed.) Citation

Orwell, George. Down and Out in Paris and London. Orlando [etc.]: A Harvest Book. Harcourt, Inc, 2010.

MLA (9th ed.) Citation

Orwell, George. Down and Out in Paris and London. A Harvest Book. Harcourt, Inc, 2010.