APA (7th ed.) Citation

Hellmut Schumann (Zurych). (2014). Fine and rare books. Hellmut Schumann AG.

Chicago Style (17th ed.) Citation

Hellmut Schumann (Zurych). Fine and Rare Books. Zürich: Hellmut Schumann AG, 2014.

MLA (9th ed.) Citation

Hellmut Schumann (Zurych). Fine and Rare Books. Hellmut Schumann AG, 2014.

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