APA (7th ed.) Citation

Hellmut Schumann (Zurych). (2006). Fine and rare books. Hellmut Schumann AG.

Chicago Style (17th ed.) Citation

Hellmut Schumann (Zurych). Fine and Rare Books. Zurich: Hellmut Schumann AG, 2006.

MLA (9th ed.) Citation

Hellmut Schumann (Zurych). Fine and Rare Books. Hellmut Schumann AG, 2006.

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