APA (7th ed.) Citation
Helmus, T. C., York, E., & Chalk, P. (2013). Promoting online voices for countering violent extremism. Rand Corp..
Chicago Style (17th ed.) Citation
Helmus, Todd C., Erin York, and Peter Chalk. Promoting Online Voices for Countering Violent Extremism. [Santa Monica, Calif.]: Rand Corp., 2013.
MLA (9th ed.) Citation
Helmus, Todd C., et al. Promoting Online Voices for Countering Violent Extremism. Rand Corp., 2013.
Warning: These citations may not always be 100% accurate.