APA (7th ed.) Citation

Heinrich <von Veldeke>, Frings, T., & Schieb, G. (1956). Sente Servas = Sanctus Servatius. Niemeyer.

Chicago Style (17th ed.) Citation

Heinrich <von Veldeke>, Theodor Frings, and Gabriele Schieb. Sente Servas = Sanctus Servatius. Halle (Saale): Niemeyer, 1956.

MLA (8th ed.) Citation

Heinrich <von Veldeke>, et al. Sente Servas = Sanctus Servatius. Niemeyer, 1956.