APA (7th ed.) Citation

Valentiner, W. R. (1939). The front plane relief in medieval art.

Chicago Style (17th ed.) Citation

Valentiner, Wilhelm Reinhold. The Front Plane Relief in Medieval Art. 1939.

MLA (9th ed.) Citation

Valentiner, Wilhelm Reinhold. The Front Plane Relief in Medieval Art. 1939.

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