APA (7th ed.) Citation

Helmus, T. C., York, E., & Chalk, P. (2013). Promoting online voices for countering violent extremism. RAND Corporation.

Chicago Style (17th ed.) Citation

Helmus, Todd C., Erin York, and Peter Chalk. Promoting Online Voices for Countering Violent Extremism. Santa Monica, Calif: RAND Corporation, 2013.

MLA (9th ed.) Citation

Helmus, Todd C., et al. Promoting Online Voices for Countering Violent Extremism. RAND Corporation, 2013.