APA (7th ed.) Citation

Reni, G., & Gnudi, C. (1955). Guido Reni. Valecchi.

Chicago Style (17th ed.) Citation

Reni, Guido, and Cesare Gnudi. Guido Reni. Firenze: Valecchi, 1955.

MLA (9th ed.) Citation

Reni, Guido, and Cesare Gnudi. Guido Reni. Valecchi, 1955.

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