The Etymologies of Isidore of Seville.

MLA

Isidorus Hispalensis, et al. The Etymologies of Isidore of Seville. Cambridge: Cambridge university press, 2010.

APA

Isidorus Hispalensis, I. Hispalensis, Barney, S. A, Beach, J., Berghof, O., Hall, M., & Lewis, W. J. (2010). The Etymologies of Isidore of Seville. Cambridge: Cambridge university press.

Chicago

Isidorus Hispalensis., and Muriel Hall. The Etymologies of Isidore of Seville. Translated by Stephen A Barney and J.A Beach and Olivier Berghof and W. J Lewis. Cambridge: Cambridge university press, 2010.