Pearson/Prentice Hall & Jacobs, H. H. (2010). Prentice Hall world studies: Europe and the americas (Indiana ed.). Pearson.
Lua i Stíl Chicago (17ú heag.)Pearson/Prentice Hall agus Heidi Hayes Jacobs. Prentice Hall World Studies: Europe and the Americas. Indiana ed. Boston: Pearson, 2010.
Lua MLA (8ú heag.)Pearson/Prentice Hall agus Heidi Hayes Jacobs. Prentice Hall World Studies: Europe and the Americas. Indiana ed. Pearson, 2010.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.