Cita APA (7a ed.)

Roberts, J. M. (1970). Europe: 1880-1945. Longman.

Cita Chicago Style (17a ed.)

Roberts, John Morris. Europe: 1880-1945. London: Longman, 1970.

Cita MLA (9a ed.)

Roberts, John Morris. Europe: 1880-1945. Longman, 1970.