Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

Helmus, Todd C., Erin York, i Peter Chalk. Promoting Online Voices for Countering Violent Extremism. [Santa Monica, Calif.]: Rand Corp., 2013.

Cita MLA (9th ed.)

Helmus, Todd C., et al. Promoting Online Voices for Countering Violent Extremism. Rand Corp., 2013.