APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

Introducing Computerised Telephone Switchboards: PABXs. NCC, 1982.

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