
Martin Luther as quoted in Tappert, Theodore G. (1959). The Book of Concord: the Confessions of the Evangelical Lutheran Church. Philadelphia: Fortress Press, p. 595
"Encyclical Letter of Our Holy Father Pius X" in The American Catholic Quarterly Review, Vol. 29. No. 114 (April 1904) p. 211
Martin Luther as quoted in Tappert, Theodore G. (1959). The Book of Concord: the Confessions of the Evangelical Lutheran Church. Philadelphia: Fortress Press, p. 595
2008, Angelus following the Closing Mass (19 July 2008)
The Precious and Sacred Writings of Martin Luther (1905) edited by John Nicholas Lenker; republished as Sermons of Martin Luther (1996), p. 291
D. Martin Luthers Werke, Kritische Gesamtausgabe, 61 vols., (Weimar: Verlag Hermann Böhlaus Nochfolger, 1883-1983), 52:39 [hereinafter: WA] 1544
The Tragic Sense of Life (1913), VIII : From God to God
Letter to a Roman Catholic, July 18, 1749, The works of the Rev. John Wesley (1872), London, Wesleyan Conference Office, vol. X, p. 81. https://books.google.com/books?id=TZBKAAAAYAAJ&pg=PA81&dq=%22continued+a+pure+and+unspotted+virgin%22&hl=en&sa=X&ved=0ahUKEwjn7srt5I_NAhUUU1IKHUlzC-AQ6AEIUTAH#v=onepage&q=%22continued%20a%20pure%20and%20unspotted%20virgin%22&f=false
General sources
The SDA Bible Commentary, vol. 6, p. 1112.
John Calvin. "Commentary on Luke 1:43". Harmony of Matthew, Mark, and Luke. 1. Retrieved 2009-01-07.
Harmony of Matthew, Mark, Luke