Cita APA (7a ed.)

Swann, M. (1978). The BBC's external services under threat? BBC.

Cita Chicago Style (17a ed.)

Swann, Michael. The BBC's External Services Under Threat? London: BBC, 1978.

Cita MLA (9a ed.)

Swann, Michael. The BBC's External Services Under Threat? BBC, 1978.