Gula, R. M. (2003). The call to holiness: Embracing a fully Christian life. Paulist Press.
芝加哥风格引文Gula, Richard M. The Call to Holiness: Embracing a Fully Christian Life. New York [u.a.]: Paulist Press, 2003.
MLA引文Gula, Richard M. The Call to Holiness: Embracing a Fully Christian Life. Paulist Press, 2003.
警告：这些引文格式不一定是100％准确.