Institute of Information Scientists (Great Britain). Northern Branch. (1969). The Value of technical information to national and industrial economic development in Britain: A report of the proceedings of a conference held in the Adelphi Hotel, Liverpool on 3rd March, 1969. Institute of Information Scientists, Northern Branch.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Institute of Information Scientists (Great Britain). Northern Branch. The Value of Technical Information to National and Industrial Economic Development in Britain: A Report of the Proceedings of a Conference Held in the Adelphi Hotel, Liverpool on 3rd March, 1969. [Manchester]: Institute of Information Scientists, Northern Branch, 1969.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Institute of Information Scientists (Great Britain). Northern Branch. The Value of Technical Information to National and Industrial Economic Development in Britain: A Report of the Proceedings of a Conference Held in the Adelphi Hotel, Liverpool on 3rd March, 1969. Institute of Information Scientists, Northern Branch, 1969.