APA (7th ed.) Citation

Heß, H., Schmidt-Ewald, W., & Schmidt, K. (1927). Gotha. Engelhard-Reyher.

Chicago Style (17th ed.) Citation

Heß, Heinrich, Walter Schmidt-Ewald, and Kurt Schmidt. Gotha. Gotha: Engelhard-Reyher, 1927.

MLA (8th ed.) Citation

Heß, Heinrich, et al. Gotha. Engelhard-Reyher, 1927.