Cita APA (7th ed.)

Sington, D. (1963). Freedom of comunication. Holywell Press.

Cita Chicago (17th ed.)

Sington, Derrick. Freedom of Comunication. Londres: Holywell Press, 1963.

Cita MLA (9th ed.)

Sington, Derrick. Freedom of Comunication. Holywell Press, 1963.