Ficker, J., & Luther, M. (1920). Älteste Bildnisse Luthers (Sonderdr.). Holtermann.
Chicago Style (17th ed.) CitationFicker, Johannes, and Martin Luther. Älteste Bildnisse Luthers. Sonderdr. Magdeburg: Holtermann, 1920.
MLA (8th ed.) CitationFicker, Johannes, and Martin Luther. Älteste Bildnisse Luthers. Sonderdr. Holtermann, 1920.
Warning: These citations may not always be 100% accurate.