Cita APA

Cornwell, R. (1969). World History in the Twentieth Century. Longman.

Citación estilo Chicago

Cornwell, R.D. World History in the Twentieth Century. London: Longman, 1969.

Cita MLA

Cornwell, R.D. World History in the Twentieth Century. Longman, 1969.

Warning: These citations may not always be 100% accurate.