APA (7th ed.) Citation

Alers, W. (1999). Schiller-Gymnasium Köln: 1899-1999.

Chicago Style (17th ed.) Citation

Alers, Werner. Schiller-Gymnasium Köln: 1899-1999. Köln, 1999.

MLA (8th ed.) Citation

Alers, Werner. Schiller-Gymnasium Köln: 1899-1999. 1999.

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