APA (7th ed.) Citation

Luther, M. (1891). Trostbrief an die Christen zu Augsburg.

Chicago Style (17th ed.) Citation

Luther, Martin. Trostbrief an Die Christen Zu Augsburg. 1891.

MLA (9th ed.) Citation

Luther, Martin. Trostbrief an Die Christen Zu Augsburg. 1891.

Warning: These citations may not always be 100% accurate.