Cita APA (7a ed.)

Ogg, F. A., & Beard, C. A. (1919). National governments and the world war. MacMillan Company.

Cita Chicago Style (17a ed.)

Ogg, Frederic Austin, y Charles Austin Beard. National Governments and the World War. New York: MacMillan Company, 1919.

Cita MLA (9a ed.)

Ogg, Frederic Austin, y Charles Austin Beard. National Governments and the World War. MacMillan Company, 1919.