Ferguson, J. (1974). Clement of Alexandria. Twayne's world authors series.
芝加哥风格引文Ferguson, John. "Clement of Alexandria." Twayne's World Authors Series 1974.
MLA引文Ferguson, John. "Clement of Alexandria." Twayne's World Authors Series, 1974.
警告：这些引文格式不一定是100％准确.