Willis, D. (1978). Power of Prayer in Life and Mission. Princeton Theological Seminary, Educational Media.
芝加哥风格引文Willis, David. Power of Prayer in Life and Mission. Princeton, NJ: Princeton Theological Seminary, Educational Media, 1978.
MLA引文Willis, David. Power of Prayer in Life and Mission. Princeton Theological Seminary, Educational Media, 1978.
警告：这些引文格式不一定是100％准确.
