Sweet, A. (1908). La Madonna: Meditazione religiosa : religious meditation. Century Music.
芝加哥风格引文Sweet, A.S. La Madonna: Meditazione Religiosa : Religious Meditation. New York: Century Music, 1908.
MLA引文Sweet, A.S. La Madonna: Meditazione Religiosa : Religious Meditation. Century Music, 1908.
警告：这些引文格式不一定是100％准确.