Cita APA (7a ed.)

Doyle, R. P. (1982). Censorship and the Challenge to Intellectual Freedom.

Cita Chicago Style (17a ed.)

Doyle, Robert P. Censorship and the Challenge to Intellectual Freedom. 1982.

Cita MLA (9a ed.)

Doyle, Robert P. Censorship and the Challenge to Intellectual Freedom. 1982.