APA (7th ed.) Citation

Guazzoni, V., Galliani, C., & Galliani, C. B. (1988). Michelangelo. Belser.

Chicago Style (17th ed.) Citation

Guazzoni, Valerio, Christel Galliani, and Christel; Böhmer Galliani. Michelangelo. Stuttgart, Zürich: Belser, 1988.

MLA (8th ed.) Citation

Guazzoni, Valerio, et al. Michelangelo. Belser, 1988.