APA (7th ed.) Citation

Schwarz, K. Jenaer Porträts (o.A.).

Chicago Style (17th ed.) Citation

Schwarz, Klaus. Jenaer Porträts. o.A. Jena.

MLA (8th ed.) Citation

Schwarz, Klaus. Jenaer Porträts. o.A.

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