Pearson/Prentice Hall & Jacobs, H. H. (2009). Prentice Hall world studies: South america and europe (North Carolina ed.). Pearson/Prentice Hall.
Chicago-viite (17. p.)Pearson/Prentice Hall ja Heidi Hayes Jacobs. Prentice Hall World Studies: South America and Europe. North Carolina ed. Boston: Pearson/Prentice Hall, 2009.
MLA-viite (8. p.)Pearson/Prentice Hall ja Heidi Hayes Jacobs. Prentice Hall World Studies: South America and Europe. North Carolina ed. Pearson/Prentice Hall, 2009.
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