APA Edition Citation

Cornwell, R. D. (1984). World history in the twentieth century. Longman Group Ltd.

Chicago Edition Citation

Cornwell, R D. World History in the Twentieth Century. London: Longman Group Ltd, 1984.

MLA Edition Citation

Cornwell, R D. World History in the Twentieth Century. Longman Group Ltd, 1984.

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