APA (7th ed.) Zitazioa

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

Chicago Style (17th ed.) Zitazioa

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

MLA (9th ed.) Zitazioa

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