Conference on Trunk Telecommunications by Guided Waves, London, Institution of Electrical Engineers (Great Britain). Electronics Division, Institute of Electrical and Electronics Engineers (U.S.). United Kingdom and Republic of Ireland Section, & Institution of Electronic and Radio Engineers. (1970). Conference on trunk telecommunications by guided waves, 29 September - 2 October 1970. Institution of Electrical Engineers.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Conference on Trunk Telecommunications by Guided Waves, London, Institution of Electrical Engineers (Great Britain). Electronics Division, Institute of Electrical and Electronics Engineers (U.S.). United Kingdom and Republic of Ireland Section, و Institution of Electronic and Radio Engineers. Conference on Trunk Telecommunications by Guided Waves, 29 September - 2 October 1970. London: Institution of Electrical Engineers, 1970.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Conference on Trunk Telecommunications by Guided Waves, London, et al. Conference on Trunk Telecommunications by Guided Waves, 29 September - 2 October 1970. Institution of Electrical Engineers, 1970.