APA (7th ed.) Citation

Willke, H. (1982). Systemtheorie. UVK-Verl.-Ges.

Chicago Style (17th ed.) Citation

Willke, Helmut. Systemtheorie. Konstanz: UVK-Verl.-Ges, 1982.

MLA (9th ed.) Citation

Willke, Helmut. Systemtheorie. UVK-Verl.-Ges, 1982.

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