APA (7th ed.) Citation
O'Toole, P., Mirren, H., & Gielgud, J. (1987). Io, Caligola. Eden.
Chicago Style (17th ed.) Citation
O'Toole, Peter, Helen Mirren, and John Gielgud. Io, Caligola. Milano: Eden, 1987.
MLA (9th ed.) Citation
O'Toole, Peter, et al. Io, Caligola. Eden, 1987.
Warning: These citations may not always be 100% accurate.