O'Hanlon. Brookings Big Ideas for America. Brookings Institution Press.
Cita Chicago (17th ed.)O'Hanlon. Brookings Big Ideas for America. Brookings Institution Press.
Cita MLA (8th ed.)O'Hanlon. Brookings Big Ideas for America. Brookings Institution Press.
Atenció: Aquestes cites poden no estar 100% correctes.