Cita APA (7th ed.)

Doyle, A. (2021). Free speech: And why it matters. Constable.

Cita Chicago (17th ed.)

Doyle, Andrew. Free Speech: And Why It Matters. London: Constable, 2021.

Cita MLA (9th ed.)

Doyle, Andrew. Free Speech: And Why It Matters. Constable, 2021.