APA (7th ed.) Citation

Twentieth Century Fox Home Entertainment, Inc, McElhenney, R., Day, C., Olson, K., Howerton, G., & DeVito, D. (2009). It's always sunny in Philadelphia. 20th Century Fox.

Chicago Style (17th ed.) Citation

Twentieth Century Fox Home Entertainment, Inc, Rob McElhenney, Charlie Day, Kaitlin Olson, Glenn Howerton, and Danny DeVito. It's Always Sunny in Philadelphia. [United States]: 20th Century Fox, 2009.

MLA (9th ed.) Citation

Twentieth Century Fox Home Entertainment, Inc, et al. It's Always Sunny in Philadelphia. 20th Century Fox, 2009.