APA aipamena

Christina Howells. Sartre: The necessity of freedom. Cambridge University Press.

Chicago Style aipamena

Christina Howells. Sartre: The Necessity of Freedom. New York: Cambridge University Press.

MLA aipamena

Christina Howells. Sartre: The Necessity of Freedom. Cambridge University Press.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.