Cita APA (7a ed.)

Smolla, R. A. (1993). Free speech in an open society (1st Vintage Books ed.). Vintage Books.

Cita Chicago Style (17a ed.)

Smolla, Rodney A. Free Speech in an Open Society. 1st Vintage Books ed. New York: Vintage Books, 1993.

Cita MLA (9a ed.)

Smolla, Rodney A. Free Speech in an Open Society. 1st Vintage Books ed. Vintage Books, 1993.