APA (7th ed.) Citation

(1990). Open systems interconnection: Europäischer OSI-Anwendercongess. Online GmbH.

Chicago Style (17th ed.) Citation

Open Systems Interconnection: Europäischer OSI-Anwendercongess. Velbert: Online GmbH, 1990.

MLA (9th ed.) Citation

Open Systems Interconnection: Europäischer OSI-Anwendercongess. Online GmbH, 1990.

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