Checkland, S. (1983). British public policy 1776 - 1939: An economic, social and political perspective. London: Cambridge University Press.
استشهاد بنمط شيكاغوCheckland, Sydney. British Public Policy 1776 - 1939: An Economic, Social and Political Perspective. London: Cambridge University Press, 1983.
MLA استشهادCheckland, Sydney. British Public Policy 1776 - 1939: An Economic, Social and Political Perspective. London: Cambridge University Press, 1983.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.