APA (7th ed.) Citation

Petzold, E., Robert, S. M., & Schmidt, L. (1995). Mahnmal St. Nikolai. Historika Photoverl.

Chicago Style (17th ed.) Citation

Petzold, Eberhard, Sylvester Maximilian Robert, and Loki Schmidt. Mahnmal St. Nikolai. Hamburg: Historika Photoverl, 1995.

MLA (8th ed.) Citation

Petzold, Eberhard, et al. Mahnmal St. Nikolai. Historika Photoverl, 1995.