APA (7th ed.) Citation

Ring, O. (1955). Untersuchungen über experimentelle Porphyrie.

Chicago Style (17th ed.) Citation

Ring, Otmar. Untersuchungen über Experimentelle Porphyrie. 1955.

MLA (9th ed.) Citation

Ring, Otmar. Untersuchungen über Experimentelle Porphyrie. 1955.

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