APA引文

Aitken, J., & Hughes, C. (1977). Urgent action needed.

Citação norma Chicago

Aitken, John, and Christopher Hughes. Urgent Action Needed. 1977.

MLA引文

Aitken, John, and Christopher Hughes. Urgent Action Needed. 1977.

警告：這些引文格式不一定是100％准確.