National Institute of Standards and Technology (U.S.) & Bagwill, R. (1994). Security in open systems. Computer Systems Laboratory, National Institute of Standards and Technology.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)National Institute of Standards and Technology (U.S.) و R. Bagwill. Security in Open Systems. Gaithersburg, MD: Computer Systems Laboratory, National Institute of Standards and Technology, 1994.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)National Institute of Standards and Technology (U.S.) و R. Bagwill. Security in Open Systems. Computer Systems Laboratory, National Institute of Standards and Technology, 1994.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.