Ferguson, J. (1974). Clement of Alexandria. Twayne's world authors series.
Chicago Style (17th ed.) CitationFerguson, 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:這些引文格式不一定是100%准確.