Carlos Peña Romulo in Asian and Pacific Islander Americans in Congress, 1900-2017. Prepared under the direction of the Committee on House Administration by the Office of the Historian and the Office of the Clerk, U.S. House of Representatives. Washington: Government Publishing Office, 2018.
Romulo, Carlos Peña. I Walked With Heroes. New York: Holt Rinehart and Winston, 1961.
___. Forty Years: A Third World Soldier at the UN. New York: Greenwood Press, 1986.
___. The Romulo Reader. Makati City, Philippines: Bookmark, 1998.
Romulo, Carlos P., and Beth Day Romulo. The Philippine Presidents: Memoirs of Carlos P. Romulo with Beth Day Romulo. Quezon City, Philippines: New Day Publishers, 1988.
Spencer, Cornelia. Romulo: Voice of Freedom. New York: J. Day Co., 1953.
Wells, Evelyn. Carlos P. Romulo: Voice of Freedom. New York: Funk and Wagnalls, 1964.