Palmer, R. R. (2007). A history of the modern world. Mc Graw - Hill.
Chicago Style aipamenaPalmer, R. R. A History of the Modern World. Mc Graw - Hill, 2007.
MLA aipamenaPalmer, R. R. A History of the Modern World. Mc Graw - Hill, 2007.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.