APA (7th ed.) Citation

Fellowes, J., Trubridge, L., & Percival, B. (2011). Downton Abbey. Universal Studios.

Chicago Style (17th ed.) Citation

Fellowes, Julian, Liz Trubridge, and Brian Percival. Downton Abbey. [Universal City]: Universal Studios, 2011.

MLA (9th ed.) Citation

Fellowes, Julian, et al. Downton Abbey. Universal Studios, 2011.