APA引文

Howells, C. A. (1988). Sartre: The necessity of freedom.

Chicago Edition Citation

Howells, Christina; Author. Sartre: The Necessity of Freedom. Cambridge, Cambridge University Press, 1988.

MLA引文

Howells, Christina; Author. Sartre: The Necessity of Freedom. 1988.

警告：这些引文格式不一定是100％准确.