Robert A. Underwood 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.
Souder-Jaffery, Laura and Robert A. Underwood, eds. Chamorro Self-Determination: The Right of A People = i derechon i taotao. Agana, Guam: Chamorro Studies Association; Mangilao, Guam: Micronesian Area Research Center, University of Guam, 1987.