Cita APA (7th ed.)

ROBERTS, J. (1967). Europe 1880-1945. Longmans.

Cita Chicago (17th ed.)

ROBERTS, John. Europe 1880-1945. London: Longmans, 1967.

Cita MLA (9th ed.)

ROBERTS, John. Europe 1880-1945. Longmans, 1967.