APA (7th ed.) Citation

Ziegler, G. M. (1991). On the difference between real and complex arrangements.

Chicago Style (17th ed.) Citation

Ziegler, Günter M. On the Difference Between Real and Complex Arrangements. Berlin, 1991.

MLA (9th ed.) Citation

Ziegler, Günter M. On the Difference Between Real and Complex Arrangements. 1991.