APA (7th ed.) Citation

United States, Project Air Force (U.S.), Lesser, I. O., & Khalilzad, Z. (1998). Sources of conflict in the 21st century: Regional futures and U.S. strategy. Rand.

Chicago Style (17th ed.) Citation

United States, Project Air Force (U.S.), Ian O. Lesser, and Zalmay Khalilzad. Sources of Conflict in the 21st Century: Regional Futures and U.S. Strategy. Santa Monica, CA: Rand, 1998.

MLA (8th ed.) Citation

United States, et al. Sources of Conflict in the 21st Century: Regional Futures and U.S. Strategy. Rand, 1998.