Ringback number (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Ringback number" in English language version.

refsWebsite

Global rank English rank

5^th place

5^th place

70^th place

63^rd place

loc.gov

cdn.loc.gov

50 FR 29391 Federal Register, 50 (139), (19 July 1985). Seen 03 February 2021.

worldcat.org

search.worldcat.org

Petersen, Julie (2002). The telecommunications illustrated dictionary. Petersen, Julie K. (2nd ed.). Boca Raton, Fla.: CRC Press. p. 804. ISBN 084931173X. OCLC 51169186.