Nicolson, H. (1958). Diplomacy. Oxford: Oxfors University Press.
Trích dẫn kiểu ChicagoNicolson, Harold. Diplomacy. Oxford: Oxfors University Press, 1958.
MLA引文Nicolson, Harold. Diplomacy. Oxford: Oxfors University Press, 1958.
警告：这些引文格式不一定是100％准确.