APA (7th ed.) Citation

Online Conferences Ltd & Barber, D. L. A. (1978). Data communications networks. Online Conferences Ltd..

Chicago Style (17th ed.) Citation

Online Conferences Ltd and Derek L. A. Barber. Data Communications Networks. Uxbridge, England: Online Conferences Ltd., 1978.

MLA (9th ed.) Citation

Online Conferences Ltd and Derek L. A. Barber. Data Communications Networks. Online Conferences Ltd., 1978.