Gauba, O. (2020). Western Political Thought (4th.). National Paperbacks.
芝加哥风格引文Gauba, O.P. Western Political Thought. 4th. New Delhi: National Paperbacks, 2020.
MLA引文Gauba, O.P. Western Political Thought. 4th. National Paperbacks, 2020.
警告：这些引文格式不一定是100％准确.