Helmus, T. C., York, E., & Chalk, P. (2013). Promoting online voices for countering violent extremism. Rand Corp..
芝加哥风格引文Helmus, Todd C., Erin York, 与 Peter Chalk. Promoting Online Voices for Countering Violent Extremism. [Santa Monica, Calif.]: Rand Corp., 2013.
MLA引文Helmus, Todd C., et al. Promoting Online Voices for Countering Violent Extremism. Rand Corp., 2013.
警告：这些引文格式不一定是100％准确.