APA aipamena

(1976). Centenary of the telephone. Switzerland: ITU Telecommunication Journal.

Chicago Style aipamena

Centenary of the Telephone. Switzerland: ITU Telecommunication Journal, 1976.

MLA aipamena

Centenary of the Telephone. Switzerland: ITU Telecommunication Journal, 1976.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.