APA (7th ed.) Citation

Dürer, A., & Timm, W. (1971). Albrecht Dürer: Aquarelle. Union-Verl.

Chicago Style (17th ed.) Citation

Dürer, Albrecht, and Werner Timm. Albrecht Dürer: Aquarelle. Berlin: Union-Verl, 1971.

MLA (9th ed.) Citation

Dürer, Albrecht, and Werner Timm. Albrecht Dürer: Aquarelle. Union-Verl, 1971.

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