APA (7th ed.) Citation

Sommerlad, E. L. (1975). National communication systems: Some policy issues and options. UNESCO.

Chicago Style (17th ed.) Citation

Sommerlad, E. Lloyd. National Communication Systems: Some Policy Issues and Options. Paris: UNESCO, 1975.

MLA (9th ed.) Citation

Sommerlad, E. Lloyd. National Communication Systems: Some Policy Issues and Options. UNESCO, 1975.

Warning: These citations may not always be 100% accurate.