Young, R. (1958). Approaches to the study of politics: Twenty-two contemporary essays exploring the nature of politics and methods by which it can be studied. Northwestern University Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Young, Roland. Approaches to the Study of Politics: Twenty-two Contemporary Essays Exploring the Nature of Politics and Methods by Which It Can Be Studied. Evanston: Northwestern University Press, 1958.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Young, Roland. Approaches to the Study of Politics: Twenty-two Contemporary Essays Exploring the Nature of Politics and Methods by Which It Can Be Studied. Northwestern University Press, 1958.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.