APA (7th ed.) Citation

Twentieth Century Fox Home Entertainment, Inc, Day, C., Howerton, G., McElhenney, R., Olson, K., & DeVito, D. (2011). It's always sunny in Philadelphia. 20th Century Fox Home Entertainment.

Chicago Style (17th ed.) Citation

Twentieth Century Fox Home Entertainment, Inc, Charlie Day, Glenn Howerton, Rob McElhenney, Kaitlin Olson, and Danny DeVito. It's Always Sunny in Philadelphia. Beverly Hills, Calif.: 20th Century Fox Home Entertainment, 2011.

MLA (9th ed.) Citation

Twentieth Century Fox Home Entertainment, Inc, et al. It's Always Sunny in Philadelphia. 20th Century Fox Home Entertainment, 2011.