APA (7th ed.) Citation

Hammer, J. W., Larche, A., & Eckener, L. (1961). Seff Weidl. Edition Simon + Koch.

Chicago Style (17th ed.) Citation

Hammer, Johann Wilfried, Anne Larche, and Lotte Eckener. Seff Weidl. Konstanz: Edition Simon + Koch, 1961.

MLA (9th ed.) Citation

Hammer, Johann Wilfried, et al. Seff Weidl. Edition Simon + Koch, 1961.