APA (7th ed.) Citation

Bull, G., Porter, P., Michelangelo Buonarroti, & Condivi, A. (1987). Michelangelo, life, letters, and poetry. Oxford University Press.

Chicago Style (17th ed.) Citation

Bull, George, Peter Porter, Michelangelo Buonarroti, and Ascanio Condivi. Michelangelo, Life, Letters, and Poetry. Oxford [Oxfordshire] ; New York: Oxford University Press, 1987.

MLA (9th ed.) Citation

Bull, George, et al. Michelangelo, Life, Letters, and Poetry. Oxford University Press, 1987.