APA (7th ed.) Citation

Marcham, P. S. (1984). Data transmission via PABXs (1. publ.). National Computing Centre.

Chicago Style (17th ed.) Citation

Marcham, P. S. Data Transmission via PABXs. 1. publ. Manchester: National Computing Centre, 1984.

MLA (9th ed.) Citation

Marcham, P. S. Data Transmission via PABXs. 1. publ. National Computing Centre, 1984.

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