APA (7th ed.) Citation

Fellowes, J., Fellowes, J., & Briggs, N. (2015). Downton Abbey: A celebration (First U.S. edition.). St. Martin's Press.

Chicago Style (17th ed.) Citation

Fellowes, Jessica, Julian Fellowes, and Nick Briggs. Downton Abbey: A Celebration. First U.S. edition. New York: St. Martin's Press, 2015.

MLA (8th ed.) Citation

Fellowes, Jessica, et al. Downton Abbey: A Celebration. First U.S. edition. St. Martin's Press, 2015.

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