APA (7th ed.) Citation

Pifer, S., & O'Hanlon, M. E. (2012). The opportunity: Next steps in reducing nuclear arms. Brookings Inst. Press.

Chicago Style (17th ed.) Citation

Pifer, Steven, and Michael E. O'Hanlon. The Opportunity: Next Steps in Reducing Nuclear Arms. Washington: Brookings Inst. Press, 2012.

MLA (9th ed.) Citation

Pifer, Steven, and Michael E. O'Hanlon. The Opportunity: Next Steps in Reducing Nuclear Arms. Brookings Inst. Press, 2012.