APA (7th ed.) Citation

Pius II, P., Meserve, M., & Simonetta, M. (2003). Commentaries. Harvard University Press.

Chicago Style (17th ed.) Citation

Pius II, Pope, Margaret Meserve, and Marcello Simonetta. Commentaries. Cambridge, Massachusetts: Harvard University Press, 2003.

MLA (8th ed.) Citation

Pius II, Pope, et al. Commentaries. Harvard University Press, 2003.