APA (7th ed.) Citation

(1982). Introducing computerised telephone switchboards: PABXs. NCC Publ.

Chicago Style (17th ed.) Citation

Introducing Computerised Telephone Switchboards: PABXs. Manchester: NCC Publ, 1982.

MLA (9th ed.) Citation

Introducing Computerised Telephone Switchboards: PABXs. NCC Publ, 1982.

Warning: These citations may not always be 100% accurate.