APA引文

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

Chicago Edition Citation

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

MLA引文

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

警告：这些引文格式不一定是100％准确.