APA-referens (7:e uppl.)
(1983). The world's Telephones: A statistical compilation as of January 1, 1982. AT and T.
Chicago-referens (17:e uppl.)
The World's Telephones: A Statistical Compilation as of January 1, 1982. Morris Plains, N.J: AT and T, 1983.
MLA-referens (9:e uppl.)
The World's Telephones: A Statistical Compilation as of January 1, 1982. AT and T, 1983.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.