Hillstrom, K. (2013). World War I and the age of modern warfare. Omnigraphics.
Chicago Style (17th ed.) ZitazioaHillstrom, Kevin. World War I and the Age of Modern Warfare. Detroit, MI: Omnigraphics, 2013.
MLA (9th ed.) ZitazioaHillstrom, Kevin. World War I and the Age of Modern Warfare. Omnigraphics, 2013.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.