Baker, B., & Friedelbaum, S. H. (1966). Government in the United States. Houghton Mifflin.
Lua i Stíl Chicago (17ú heag.)Baker, Benjamin, agus Stanley H. Friedelbaum. Government in the United States. Boston: Houghton Mifflin, 1966.
Lua MLA (9ú heag.)Baker, Benjamin, agus Stanley H. Friedelbaum. Government in the United States. Houghton Mifflin, 1966.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.