APA (7th ed.) Citation

Knorr, L. (1989). Offener Brief an Heiner Geißler. antifa-rundschau, 15.

Chicago Style (17th ed.) Citation

Knorr, Lorenz. "Offener Brief an Heiner Geißler." Antifa-rundschau 1989: 15.

MLA (8th ed.) Citation

Knorr, Lorenz. "Offener Brief an Heiner Geißler." Antifa-rundschau, 1989, p. 15.

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