APA (7th ed.) Citation

Winnick, K., Gilsig, J., & Standen, C. (2013). Vikings. [Publisher not identified].

Chicago Style (17th ed.) Citation

Winnick, Katheryn, Jessalyn Gilsig, and Clive Standen. Vikings. [Place of publication not identified]: [Publisher not identified], 2013.

MLA (9th ed.) Citation

Winnick, Katheryn, et al. Vikings. [Publisher not identified], 2013.