Hillard, J. (1976). Political and legal factors and regulation P881 Unit 14. Open University Press.
استشهاد بنمط شيكاغوHillard, John. Political and Legal Factors and Regulation P881 Unit 14. England: Open University Press, 1976.
MLA استشهادHillard, John. Political and Legal Factors and Regulation P881 Unit 14. Open University Press, 1976.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.