Não informado. (1969). Current Papers in Electrical and Electronics Engineering. Institution of Electrical Engineers.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Não informado. Current Papers in Electrical and Electronics Engineering. London: Institution of Electrical Engineers, 1969.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Não informado. Current Papers in Electrical and Electronics Engineering. Institution of Electrical Engineers, 1969.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.