Himmelfarb, G. (1952). Lord Acton: A study in conscience and politics. Routledge & Paul.
芝加哥风格引文Himmelfarb, Gertrude. Lord Acton: A Study in Conscience and Politics. London: Routledge & Paul, 1952.
MLA引文Himmelfarb, Gertrude. Lord Acton: A Study in Conscience and Politics. Routledge & Paul, 1952.
警告：这些引文格式不一定是100％准确.