Rao, B. (1994). World history. Sterling.
Chicago Style (17th ed.) ZitazioaRao, B.V. World History. New Delhi: Sterling, 1994.
MLA (9th ed.) ZitazioaRao, B.V. World History. Sterling, 1994.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.
Rao, B. (1994). World history. Sterling.
Chicago Style (17th ed.) ZitazioaRao, B.V. World History. New Delhi: Sterling, 1994.
MLA (9th ed.) ZitazioaRao, B.V. World History. Sterling, 1994.