Kramer, P. (2017). History in a time of crisis [essay]. Social Science Diliman.
芝加哥风格引文Kramer, Paul. "History in a Time of Crisis [essay]." Social Science Diliman 2017.
MLA引文Kramer, Paul. "History in a Time of Crisis [essay]." Social Science Diliman, 2017.
警告：这些引文格式不一定是100％准确.