Cita APA (7th ed.)

Silva, M. A. d., & Siriwardene, R. (1977). Communication policies in Sri Lanka. UNESCO.

Cita Chicago (17th ed.)

Silva, M. A. de, i Reggie Siriwardene. Communication Policies in Sri Lanka. París: UNESCO, 1977.

Cita MLA (9th ed.)

Silva, M. A. de, i Reggie Siriwardene. Communication Policies in Sri Lanka. UNESCO, 1977.