Helm, P. (2008). Calvin: A guide for the perplexed. T & T Clark.
芝加哥风格引文Helm, Paul. Calvin: A Guide for the Perplexed. London ; New York: T & T Clark, 2008.
MLA引文Helm, Paul. Calvin: A Guide for the Perplexed. T & T Clark, 2008.
警告:这些引文格式不一定是100%准确.