APA (7th ed.) Citation

Luther, M. (1891). Brief an die Christen zu Riga, Reval und Dorpat.

Chicago Style (17th ed.) Citation

Luther, Martin. Brief an Die Christen Zu Riga, Reval Und Dorpat. 1891.

MLA (9th ed.) Citation

Luther, Martin. Brief an Die Christen Zu Riga, Reval Und Dorpat. 1891.

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