APA (7th ed.) Citation

Warwick, S. (2012). Upstairs & downstairs: The illustrated guide to the real world of Downton Abbey. Carlton Books.

Chicago Style (17th ed.) Citation

Warwick, Sarah. Upstairs & Downstairs: The Illustrated Guide to the Real World of Downton Abbey. London: Carlton Books, 2012.

MLA (9th ed.) Citation

Warwick, Sarah. Upstairs & Downstairs: The Illustrated Guide to the Real World of Downton Abbey. Carlton Books, 2012.