(2006). Prentice Hall science explorer. Learning Solutions, Prentice Hall.
Chicago Style aipamenaPrentice Hall Science Explorer. New York : Boston: Learning Solutions, Prentice Hall, 2006.
MLA aipamenaPrentice Hall Science Explorer. Learning Solutions, Prentice Hall, 2006.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.