APA (7th ed.) Citation

Unesco. Division of Free Flow of Information. (1951). World communications, press, radio, film, television (New and rev. ed.). [publisher not identified].

Chicago Style (17th ed.) Citation

Unesco. Division of Free Flow of Information. World Communications, Press, Radio, Film, Television. New and rev. ed. [Paris]: [publisher not identified], 1951.

MLA (9th ed.) Citation

Unesco. Division of Free Flow of Information. World Communications, Press, Radio, Film, Television. New and rev. ed. [publisher not identified], 1951.