Sommerfeld, R. M. (1966). Tax reform and the Alliance for progress. Institute of Latin American Studies y the University of Texas Press.
Lua i Stíl Chicago (17ú heag.)Sommerfeld, Raynard M. Tax Reform and the Alliance for Progress. Austin: Institute of Latin American Studies y the University of Texas Press, 1966.
Lua MLA (9ú heag.)Sommerfeld, Raynard M. Tax Reform and the Alliance for Progress. Institute of Latin American Studies y the University of Texas Press, 1966.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.