Cita APA (7th ed.)

The London Geographical Institute. (1940). Daily Express war map of Belgium & Holland. Philip & son.

Cita Chicago (17th ed.)

The London Geographical Institute. Daily Express War Map of Belgium & Holland. London: Philip & son, 1940.

Cita MLA (8th ed.)

The London Geographical Institute. Daily Express War Map of Belgium & Holland. Philip & son, 1940.