Sommerfeld, R. M. (1966). Tax reform and the Alliance for progress. Institute of Latin American Studies by 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 by 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 by the University of Texas Press, 1966.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.