APA (7th ed.) Citation

(1988). Bergisch Gladbach. Droste-Verl.

Chicago Style (17th ed.) Citation

Bergisch Gladbach. Düsseldorf: Droste-Verl, 1988.

MLA (9th ed.) Citation

Bergisch Gladbach. Droste-Verl, 1988.

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