APA (7th ed.) Citation

Luther, M., Clemen, O., & Brenner, O. (1909). Widerruf vom Fegefeuer 1530.

Chicago Style (17th ed.) Citation

Luther, Martin, Otto Clemen, and Oskar Brenner. Widerruf Vom Fegefeuer 1530. 1909.

MLA (9th ed.) Citation

Luther, Martin, et al. Widerruf Vom Fegefeuer 1530. 1909.

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