(1984). The World and its People: The United States and its Neighbors. Silver, Burdett & Ginn Inc.
Lua i Stíl Chicago (17ú heag.)The World and Its People: The United States and Its Neighbors. Estados Unidos: Silver, Burdett & Ginn Inc, 1984.
Lua MLA (9ú heag.)The World and Its People: The United States and Its Neighbors. Silver, Burdett & Ginn Inc, 1984.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.