Cita APA (7a ed.)

East, W. G. (1950). An Historical Geography of Europe (4. ed.). Methuen.

Cita Chicago Style (17a ed.)

East, W. Gordon. An Historical Geography of Europe. 4. ed. London: Methuen, 1950.

Cita MLA (9a ed.)

East, W. Gordon. An Historical Geography of Europe. 4. ed. Methuen, 1950.