Jacobs, H. H., & LeVasseur, M. (2005). Prentice Hall world studies Western Hemisphere: Geography, history, culture. Pearson/Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Jacobs, Heidi Hayes, agus Michal LeVasseur. Prentice Hall World Studies Western Hemisphere: Geography, History, Culture. Needham, Mass.: Pearson/Prentice Hall, 2005.
Lua MLA (8ú heag.)Jacobs, Heidi Hayes, agus Michal LeVasseur. Prentice Hall World Studies Western Hemisphere: Geography, History, Culture. Pearson/Prentice Hall, 2005.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.