Cita APA (7th ed.)

Roberts, J. M. (1989). Europe: 1880-1945 (2nd ed.). Longman.

Cita Chicago (17th ed.)

Roberts, J. M. Europe: 1880-1945. 2nd ed. London: Longman, 1989.

Cita MLA (9th ed.)

Roberts, J. M. Europe: 1880-1945. 2nd ed. Longman, 1989.