APA (7th ed.) Citation

Keen, R., Melanchthon, P., & Dietrich, V. (1986). Melanchthon's letter to Veit Dietrich of 15 May 1540. Archiv für Reformationsgeschichte, 77, 313-315.

Chicago Style (17th ed.) Citation

Keen, Ralph, Philipp Melanchthon, and Veit Dietrich. "Melanchthon's Letter to Veit Dietrich of 15 May 1540." Archiv Für Reformationsgeschichte 77 (1986): 313-315.

MLA (9th ed.) Citation

Keen, Ralph, et al. "Melanchthon's Letter to Veit Dietrich of 15 May 1540." Archiv Für Reformationsgeschichte, vol. 77, 1986, pp. 313-315.

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