Hilsman, R. (1990). The politics of policy making in defense and foreign affairs: Conceptual models and bureaucratic politics (2nd ed.). Prentice Hall.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Hilsman, Roger. The Politics of Policy Making in Defense and Foreign Affairs: Conceptual Models and Bureaucratic Politics. 2nd ed. Englewood Cliffs, N.J: Prentice Hall, 1990.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Hilsman, Roger. The Politics of Policy Making in Defense and Foreign Affairs: Conceptual Models and Bureaucratic Politics. 2nd ed. Prentice Hall, 1990.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.