Barraclough, G. (1991). Main trends in history. Holmes & Meier.
Chicago Style aipamenaBarraclough, Geoffrey. Main Trends in History. New York: Holmes & Meier, 1991.
MLA aipamenaBarraclough, Geoffrey. Main Trends in History. Holmes & Meier, 1991.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.