Cita APA (7a ed.)

Diem, A. (1969). Western Europe: A geographical analysis. Wiley.

Cita Chicago Style (17a ed.)

Diem, Aubrey. Western Europe: A Geographical Analysis. New York: Wiley, 1969.

Cita MLA (9a ed.)

Diem, Aubrey. Western Europe: A Geographical Analysis. Wiley, 1969.