APA (7th ed.) Citation

Spieler, R., Gregorius Ariminensis vor 1310 - 1358, & Luther, M. (1953). Luther and Gregor of Rimini.

Chicago Style (17th ed.) Citation

Spieler, Robert, Gregorius Ariminensis vor 1310 - 1358, and Martin Luther. Luther and Gregor of Rimini. 1953.

MLA (9th ed.) Citation

Spieler, Robert, et al. Luther and Gregor of Rimini. 1953.

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