Costa Rica: Since Independence
A Brief History of Costa Rica Toward Common Security in Central America
Costa Rica: History: Caught Between a World War (1939) and a civil war (1948)
Costa Rica: People: Rafael Angel Calderón Guardia (politician)
Costa Rica: History: The Civil War of 1948
Costa Rica: Politics: Our Democracy: An Overview
Early Democratization in Latin America, Costa Rica in the Context of Chile and Uruguay by John A. Peeler
Costa Rica Handbook by Christopher Baker