APA استشهاد

Yearwood, P. J. (2009). Guarantee of peace: The League of Nations in British policy, 1914-1925. Oxford University Press.

استشهاد بنمط شيكاغو

Yearwood, Peter J. Guarantee of Peace: The League of Nations in British Policy, 1914-1925. Oxford: Oxford University Press, 2009.

MLA استشهاد

Yearwood, Peter J. Guarantee of Peace: The League of Nations in British Policy, 1914-1925. Oxford University Press, 2009.