Cita APA (7th ed.)

Johnston, H. H., & Guest, L. H. (1920). The Outline of the world to-day. G. Newnes.

Cita Chicago (17th ed.)

Johnston, Harry Hamilton, i L. Haden Guest. The Outline of the World To-day. London: G. Newnes, 1920.

Cita MLA (8th ed.)

Johnston, Harry Hamilton, i L. Haden Guest. The Outline of the World To-day. G. Newnes, 1920.