APA (7th ed.) Citation

Hardy, P. (1984). Digital private circuits for data communications. NCC Publications.

Chicago Style (17th ed.) Citation

Hardy, P. Digital Private Circuits for Data Communications. Manchester: NCC Publications, 1984.

MLA (9th ed.) Citation

Hardy, P. Digital Private Circuits for Data Communications. NCC Publications, 1984.

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