North American ISDN Users' Forum, Wakid, S. A., & Roberts, K. M. (1991). North American ISDN Users' Forum agreements on integrated services digital network: Based on work performed by the North American ISDN Users' Forum. U.S. Dept. of Commerce, National Institute of Standards and Technology.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)North American ISDN Users' Forum, Shukri A. Wakid, و Kathleen M. Roberts. North American ISDN Users' Forum Agreements on Integrated Services Digital Network: Based on Work Performed by the North American ISDN Users' Forum. Gaithersburg, MD: U.S. Dept. of Commerce, National Institute of Standards and Technology, 1991.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)North American ISDN Users' Forum, et al. North American ISDN Users' Forum Agreements on Integrated Services Digital Network: Based on Work Performed by the North American ISDN Users' Forum. U.S. Dept. of Commerce, National Institute of Standards and Technology, 1991.