APA (7th ed.) Citation

Fellowes, J., & Briggs, N. (2011). The world of Downton Abbey (1st U.S. ed.). St. Martin's Press.

Chicago Style (17th ed.) Citation

Fellowes, Jessica, and Nick Briggs. The World of Downton Abbey. 1st U.S. ed. New York, N.Y.: St. Martin's Press, 2011.

MLA (8th ed.) Citation

Fellowes, Jessica, and Nick Briggs. The World of Downton Abbey. 1st U.S. ed. St. Martin's Press, 2011.

Warning: These citations may not always be 100% accurate.