توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

International Cable Directory Company & Western Union Telegraphy Company. International cable register of the world in conjunction with Western Union telegraphic code. Compiled and published by International Cable Directory Co.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

International Cable Directory Company و Western Union Telegraphy Company. International Cable Register of the World in Conjunction with Western Union Telegraphic Code. New York ; London: Compiled and published by International Cable Directory Co.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

International Cable Directory Company و Western Union Telegraphy Company. International Cable Register of the World in Conjunction with Western Union Telegraphic Code. Compiled and published by International Cable Directory Co.