Catalogue Persistent Identifier
https://nla.gov.au/nla.cat-vn1062892
APA Citation
(1983). Telecommunications systems and services directory.
MLA Citation
Telecommunications systems and services directory 1983
Australian/Harvard Citation
1983, Telecommunications systems and services directory
Wikipedia Citation
{{Citation | title=[article title here] | author=[article author here] | author2=[first co-author here] | date=[date of publication] | journal=Telecommunications systems and services directory | publisher=Gale Research Co | language=English }}