APA-ийн эшлэл(7 дахь хэвлэлт)

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

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

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

MLA -ийн эшлэл (9 дэх хэвлэлт)

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