Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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