APA (7th ed.) Citation

Rotthauwe-Löns, H. (1980). Kostbarkeit Kalkar.

Chicago Style (17th ed.) Citation

Rotthauwe-Löns, Helmut. Kostbarkeit Kalkar. 1980.

MLA (9th ed.) Citation

Rotthauwe-Löns, Helmut. Kostbarkeit Kalkar. 1980.

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