APA-referens (7:e uppl.)

Sweet, A. (1908). La Madonna: Meditazione religiosa : religious meditation. Century Music.

Chicago-referens (17:e uppl.)

Sweet, A.S. La Madonna: Meditazione Religiosa : Religious Meditation. New York: Century Music, 1908.

MLA-referens (9:e uppl.)

Sweet, A.S. La Madonna: Meditazione Religiosa : Religious Meditation. Century Music, 1908.