Citace podle APA (7th ed.)

International Telecommunication Union. General Secretariat. General telephone statistics compiled from official documents. s.n.

Citace podle Chicago (17th ed.)

International Telecommunication Union. General Secretariat. General Telephone Statistics Compiled from Official Documents. Geneva: s.n.

Citace podle MLA (9th ed.)

International Telecommunication Union. General Secretariat. General Telephone Statistics Compiled from Official Documents. s.n.

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