Valvo GmbH. Valvo-Handbuch. Boysen & Maasch.
Chicago Style (17th ed.) CitationValvo GmbH. Valvo-Handbuch. Hamburg: Boysen & Maasch.
MLA (9th ed.) CitationValvo GmbH. Valvo-Handbuch. Boysen & Maasch.
Warning: These citations may not always be 100% accurate.