Heywood Andrew. Political Ideologies: An Introduction (5th.). Palgrave Macmillan.
芝加哥风格引文Heywood Andrew. Political Ideologies: An Introduction. 5th. New York New York: Palgrave Macmillan.
MLA引文Heywood Andrew. Political Ideologies: An Introduction. 5th. Palgrave Macmillan.
警告：这些引文格式不一定是100％准确.