(1977). Handbook on international radio regulations (1977 ed.). Central Lawbook Pub. Co.
Cita Chicago (17th ed.)Handbook on International Radio Regulations. 1977 ed. Quezon City: Central Lawbook Pub. Co, 1977.
Cita MLA (9th ed.)Handbook on International Radio Regulations. 1977 ed. Central Lawbook Pub. Co, 1977.
Atenció: Aquestes cites poden no estar 100% correctes.