Petitte, R. D. (2013). Civilization at risk: Seeds of strife. Cambridge Scholars Publishing.
芝加哥风格引文Petitte, Ron D. Civilization at Risk: Seeds of Strife. Newcastle upon Tyne, England: Cambridge Scholars Publishing, 2013.
MLA引文Petitte, Ron D. Civilization at Risk: Seeds of Strife. Cambridge Scholars Publishing, 2013.
警告：这些引文格式不一定是100％准确.