Kracht, J. B. (2005). Prentice Hall world explorer: People, places, and cultures. Needham, MA: Prentice Hall.
Chicago Style aipamenaKracht, James B. Prentice Hall World Explorer: People, Places, and Cultures. Needham, MA: Prentice Hall, 2005.
MLA aipamenaKracht, James B. Prentice Hall World Explorer: People, Places, and Cultures. Needham, MA: Prentice Hall, 2005.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.