APA (7th ed.) Citation

Gaius, Abdy, J. T., & Walker, B. (1870). The commentaries of Gaius. University Press.

Chicago Style (17th ed.) Citation

Gaius, J. T. Abdy, and Bryan Walker. The Commentaries of Gaius. Cambridge: University Press, 1870.

MLA (8th ed.) Citation

Gaius, et al. The Commentaries of Gaius. University Press, 1870.