APA (7th ed.) Citation

Speak-Up, Singer, B., & Cruise, T. (2008). Valkiria. RBA Edipresse.

Chicago Style (17th ed.) Citation

Speak-Up, Bryan Singer, and Tom Cruise. Valkiria. Barcelona: RBA Edipresse, 2008.

MLA (9th ed.) Citation

Speak-Up, et al. Valkiria. RBA Edipresse, 2008.