APA (7th ed.) Citation

Fellowes, J., Smith, M., & Bonneville, H. (2015). Downton Abbey. Universal Studios [u.a.].

Chicago Style (17th ed.) Citation

Fellowes, Julian, Maggie Smith, and Hugh Bonneville. Downton Abbey. [S.l.]: Universal Studios [u.a.], 2015.

MLA (9th ed.) Citation

Fellowes, Julian, et al. Downton Abbey. Universal Studios [u.a.], 2015.